Certified Clinical Transplant Nurse (CCTN) — Questions and Answers

Question 1: A kidney transplant recipient expresses guilt about their donor's death. What is the most therapeutic nursing response?

Tell the patient they should feel grateful, not guilty
Acknowledge the patient's feelings, normalize them, and offer connection to counseling or donor family support programs (Correct answer)
Explain to the patient that guilt is irrational
Redirect the patient to focus on their recovery

Correct answer: Acknowledge the patient's feelings, normalize them, and offer connection to counseling or donor family support programs

Survivor guilt is a recognized psychological response in transplant recipients; acknowledging feelings, normalizing them, and offering support resources is the therapeutic approach.

Question 2: A transplant recipient returning from a trip to the Ohio and Mississippi River valleys presents with fever, night sweats, and mediastinal lymphadenopathy. Which endemic fungal infection should be suspected?

Aspergillus fumigatus
Histoplasma capsulatum (Correct answer)
Coccidioides immitis
Cryptococcus neoformans

Correct answer: Histoplasma capsulatum

Histoplasma capsulatum is endemic to the Ohio and Mississippi River valleys and can cause severe disseminated disease in immunocompromised transplant recipients following environmental exposure.

Question 3: A transplant nurse notes a tacrolimus trough level of 22 ng/mL in a 3-month post-kidney-transplant patient. What is the most appropriate action?

Notify the provider because the level is supratherapeutic (Correct answer)
Administer a supplemental dose immediately
Increase the dose because levels should be higher at 3 months
Document and continue current regimen

Correct answer: Notify the provider because the level is supratherapeutic

At 3 months post-transplant, tacrolimus trough targets are typically 8–12 ng/mL; a level of 22 ng/mL is supratherapeutic and requires physician notification.

Question 4: When a patient has a surgical site infection and purulent discharge, certain measures are advised.

Contact and Droplet
Contact (Correct answer)
Airbone
Droplet

Correct answer: Contact

A surgical site infection with purulent discharge indicates the presence of infectious microorganisms that can be transmitted through direct or indirect contact with the wound or contaminated surfaces. Therefore, contact precautions, including the use of gloves and gowns, are essential to prevent the spread of these pathogens to other patients or healthcare personnel.

Question 5: Which immunosuppressant drug class works by blocking calcineurin to prevent T-cell activation?

Calcineurin inhibitors (Correct answer)
Corticosteroids
mTOR inhibitors
Antimetabolites

Correct answer: Calcineurin inhibitors

Calcineurin inhibitors such as tacrolimus and cyclosporine block calcineurin, preventing IL-2 production and T-cell proliferation.

Question 6: The United Network for Organ Sharing (UNOS) kidney allocation system prioritizes candidates based on all of the following EXCEPT:

Calculated panel reactive antibody (CPRA) level
Recipient's annual household income (Correct answer)
Degree of HLA mismatch
Time on the waiting list

Correct answer: Recipient's annual household income

UNOS allocation is based on medical and immunological factors including wait time, HLA mismatch, CPRA, and geographic proximity — not financial status.

Question 7: What monitoring strategy is recommended for early detection of CMV infection in transplant recipients who are at intermediate risk (D+/R+ or D-/R+)?

Clinical monitoring only, treating when symptoms develop
Monthly CMV antigenemia testing (pp65) as the sole surveillance method
Pre-emptive therapy guided by regular CMV quantitative PCR surveillance (Correct answer)
Universal prophylaxis with valganciclovir for 12 months

Correct answer: Pre-emptive therapy guided by regular CMV quantitative PCR surveillance

Pre-emptive therapy uses quantitative PCR to detect rising CMV viremia before symptoms develop, allowing targeted antiviral treatment and avoiding unnecessary prolonged prophylaxis in intermediate-risk patients.

Question 8: What is the nurse's priority action when a kidney transplant patient reports no urine output 2 hours post-operatively?

Assess catheter patency, check vitals, and notify the surgeon immediately (Correct answer)
Administer furosemide IV without orders
Encourage oral fluid intake
Wait and reassess in 2 hours

Correct answer: Assess catheter patency, check vitals, and notify the surgeon immediately

Anuria post-kidney transplant may indicate surgical complications, vascular thrombosis, or urinary obstruction — all require immediate evaluation.

Question 9: Which viral infection is the most common opportunistic infection in solid organ transplant recipients?

Epstein-Barr virus (EBV)
Cytomegalovirus (CMV) (Correct answer)
Herpes simplex virus (HSV)
Varicella-zoster virus (VZV)

Correct answer: Cytomegalovirus (CMV)

CMV is the most prevalent opportunistic viral infection post-transplant due to immunosuppression, often presenting 1–3 months after transplant.

Question 10: Which statement best describes the expanded criteria donor (ECD) designation for kidneys?

ECD kidneys are only from donors under age 18
ECD kidneys come from donors with risk factors associated with higher graft failure rates but may still benefit recipients (Correct answer)
ECD kidneys are always declined by transplant centers
ECD designation applies only to donors with cancer history

Correct answer: ECD kidneys come from donors with risk factors associated with higher graft failure rates but may still benefit recipients

ECD kidneys come from donors with specific risk factors (age ≥60, or age 50–59 with comorbidities) that are associated with higher graft failure rates but may still provide benefit over dialysis.

Question 11: A transplant patient on tacrolimus and TMP-SMX develops hyperkalemia. What is the most likely cause?

Combined effect of tacrolimus and TMP-SMX on renal potassium excretion (Correct answer)
Dietary potassium excess alone
Addison's disease triggered by immunosuppression
Tacrolimus-induced hyperaldosteronism

Correct answer: Combined effect of tacrolimus and TMP-SMX on renal potassium excretion

Both tacrolimus and TMP-SMX reduce renal potassium excretion through different mechanisms, and their combination commonly causes hyperkalemia in transplant recipients.

Question 12: A pancreas transplant recipient's fasting blood glucose rises from 90 to 210 mg/dL on post-operative day 14. What should the nurse suspect FIRST?

Graft rejection or thrombosis (Correct answer)
Steroid-induced hyperglycemia from recent pulse dose
Normal post-operative stress response
Dietary non-compliance

Correct answer: Graft rejection or thrombosis

A sudden rise in glucose in a pancreas transplant recipient signals potential graft rejection or vascular thrombosis, both of which impair insulin secretion and require immediate investigation.

Question 13: Mycophenolate mofetil (MMF) inhibits which enzyme to suppress lymphocyte proliferation?

mTOR
Dihydrofolate reductase
Inosine monophosphate dehydrogenase (IMPDH) (Correct answer)
Calcineurin

Correct answer: Inosine monophosphate dehydrogenase (IMPDH)

MMF inhibits IMPDH, blocking de novo purine synthesis which lymphocytes rely on exclusively for proliferation, making it lymphocyte-selective.

Question 14: Many facilities use enzyme immunoassay for HIV testing. Which of the following techniques confirms ambiguous or positive results?

Complement dependent cytotoxic assay
Western Blot (Correct answer)
Flow cytometry
Enzyme linked immunosorbent assay (ELISA)

Correct answer: Western Blot

The enzyme immunoassay (EIA or ELISA) is a screening test for HIV. If the EIA yields a positive or ambiguous result, a more specific and confirmatory test is required to definitively diagnose HIV infection. The Western Blot is considered the gold standard confirmatory test, as it detects specific HIV antibodies with high accuracy.

Question 15: A patient awaiting a heart transplant has blood type O negative. This patient can receive a heart from:

O negative and O positive donors only (Correct answer)
Only O negative donors
Any ABO blood type donor
O and A donors only

Correct answer: O negative and O positive donors only

Blood type O is the universal donor for red cells, but for solid organs ABO compatibility (not exact match) is required; O recipients can receive from O+ or O- donors.

Question 16: Acute cellular rejection is primarily mediated by which immune cells?

Natural killer cells
Neutrophils
T lymphocytes (Correct answer)
B lymphocytes

Correct answer: T lymphocytes

Acute cellular rejection is primarily mediated by T lymphocytes that recognize donor antigens and mount an immune response against the graft.

Question 17: What is the significance of donor-specific antibodies (DSA) detected post-transplant?

They have no clinical significance
They are associated with antibody-mediated rejection and reduced graft survival (Correct answer)
They indicate successful engraftment
They improve graft tolerance

Correct answer: They are associated with antibody-mediated rejection and reduced graft survival

De novo DSAs are associated with antibody-mediated rejection (AMR) and are linked to worse long-term graft outcomes.

Question 18: Cold ischemia time refers to which period in organ transplantation?

Time from cross-clamp to organ reperfusion in the recipient
Time from brain death declaration to procurement
Time the organ spends in warm conditions before preservation
Time between organ procurement and transplantation into the recipient (Correct answer)

Correct answer: Time between organ procurement and transplantation into the recipient

Cold ischemia time is the period from organ procurement and cooling to transplantation and reperfusion, during which the organ is preserved in cold storage solution.

Question 19: Leukocyte reduction in place of plasma removal. employed to reject.

Hemolysis
Plasmapheresis (Correct answer)
Blood transfusion
Electrophoresis

Correct answer: Plasmapheresis

Plasmapheresis is a medical procedure that involves removing blood plasma from the body, often to remove harmful substances or components. While its primary goal is plasma removal, leukocyte reduction (removing white blood cells) can be a related or complementary process in blood component therapy or preparation. The question implies a procedure where components are removed to 'reject' something, aligning with the concept of removing specific blood elements.

Question 20: Post-transplant erythrocytosis (PTE) in kidney transplant recipients is best managed by which medication class?

ACE inhibitors or angiotensin receptor blockers (Correct answer)
Calcium channel blockers
Erythropoiesis-stimulating agents
Diuretics

Correct answer: ACE inhibitors or angiotensin receptor blockers

ACE inhibitors and ARBs effectively reduce erythrocytosis in post-transplant patients by decreasing erythropoietin-stimulated red cell production.

Question 21: What is the primary role of HLA matching in solid organ transplantation?

To reduce the risk of immunologic rejection (Correct answer)
To assess organ function prior to transplant
To match blood types between donor and recipient
To determine organ size compatibility

Correct answer: To reduce the risk of immunologic rejection

HLA matching reduces the immunologic mismatch between donor and recipient, thereby lowering the risk of rejection.

Question 22: A potential organ donor has a history of treated hypertension and mild proteinuria. What step is most important before accepting the kidneys?

Check the donor's family history only
Automatically decline the kidneys due to donor comorbidities
Perform a donor kidney biopsy to assess histologic quality (Correct answer)
Proceed with procurement without additional evaluation

Correct answer: Perform a donor kidney biopsy to assess histologic quality

A biopsy helps assess the degree of glomerulosclerosis and arterial changes, informing the decision to use one or both kidneys or decline them.

Question 23: What is the significance of Panel Reactive Antibody (PRA) percentage in transplant candidates?

It measures liver enzyme levels
It indicates the percentage of donor pool against which the patient has antibodies (Correct answer)
It determines blood type compatibility
It measures kidney function

Correct answer: It indicates the percentage of donor pool against which the patient has antibodies

A high PRA means the recipient has antibodies against a large portion of potential donors, making compatible matching more difficult.

Question 24: Chronic allograft nephropathy is characterized by which pathological finding on biopsy?

Hyperacute vascular thrombosis
Granulomatous inflammation
Neutrophilic infiltration
Interstitial fibrosis and tubular atrophy (Correct answer)

Correct answer: Interstitial fibrosis and tubular atrophy

Chronic allograft nephropathy is characterized by interstitial fibrosis and tubular atrophy, reflecting cumulative immune and non-immune injury over time.

Question 25: What is the first-line treatment for acute cellular rejection confirmed by biopsy?

Initiate plasmapheresis
High-dose intravenous corticosteroids (pulse steroids) (Correct answer)
Increase maintenance tacrolimus dose only
Start rituximab infusion

Correct answer: High-dose intravenous corticosteroids (pulse steroids)

High-dose IV methylprednisolone (pulse steroids) is the first-line treatment for acute cellular rejection, typically given for 3–5 days.

Question 26: A lung transplant recipient develops a new obstructive pattern on pulmonary function testing at 18 months post-transplant with an FEV1 decline of 25% from baseline. This is MOST consistent with:

Acute cellular rejection
Pneumonia
Bronchiolitis obliterans syndrome (BOS) (Correct answer)
Pleural effusion

Correct answer: Bronchiolitis obliterans syndrome (BOS)

Bronchiolitis obliterans syndrome is the most common form of chronic lung allograft dysfunction, characterized by progressive obstructive airflow decline.

Question 27: Which screening test should be performed on all transplant candidates to detect latent tuberculosis prior to transplantation?

Chest X-ray alone is sufficient for TB screening
Tuberculin skin test (TST) or interferon-gamma release assay (IGRA) (Correct answer)
Sputum AFB culture from three consecutive samples
Bronchoscopy with BAL for mycobacterial culture

Correct answer: Tuberculin skin test (TST) or interferon-gamma release assay (IGRA)

Both TST and IGRA (QuantiFERON-TB Gold) are recommended for pre-transplant latent TB screening, as immunosuppression post-transplant carries a significant risk of reactivating latent infection.

Question 28: Which live vaccines are contraindicated in solid organ transplant recipients on maintenance immunosuppression?

MMR (measles-mumps-rubella) and varicella zoster live vaccine (Correct answer)
Tetanus, diphtheria, and pertussis (Tdap)
Hepatitis B and recombinant zoster vaccine
Inactivated influenza and pneumococcal vaccines

Correct answer: MMR (measles-mumps-rubella) and varicella zoster live vaccine

Live attenuated vaccines such as MMR and live varicella zoster vaccine carry the risk of vaccine-strain infection in immunocompromised patients and are contraindicated post-transplant.

Question 29: During the first month post-transplant, which category of infections predominates and reflects the patient's pre-transplant health status and surgical complications?

Opportunistic infections from immunosuppression such as CMV and PCP
Reactivation of latent viral infections like EBV and VZV
Donor-derived and recipient pre-existing infections, plus surgical-site and nosocomial infections (Correct answer)
Community-acquired respiratory infections from environmental exposure

Correct answer: Donor-derived and recipient pre-existing infections, plus surgical-site and nosocomial infections

In the first month post-transplant, infections are similar to those in any post-surgical patient and reflect pre-existing conditions, donor-derived pathogens, and hospital-acquired organisms rather than immunosuppression-driven opportunists.

Question 30: Which electrolyte abnormality is a well-known side effect of tacrolimus in kidney transplant recipients?

Hyperkalemia and hypomagnesemia (Correct answer)
Hypercalcemia
Hypermagnesemia
Hyponatremia

Correct answer: Hyperkalemia and hypomagnesemia

Tacrolimus causes hyperkalemia through impaired renal potassium excretion and hypomagnesemia through urinary magnesium wasting, both of which require monitoring and dietary management.

Question 31: In a febrile solid organ transplant recipient, why is empiric broad-spectrum antibiotic therapy typically initiated promptly before culture results are available?

Immunosuppressed patients lack the typical inflammatory response and can deteriorate rapidly from occult bacteremia (Correct answer)
Antibiotics reduce the risk of triggering acute rejection episodes associated with infection
Early antibiotic therapy prevents opportunistic fungal superinfection in all transplant patients
Standard fever management guidelines recommend antibiotics for all patients with temperatures above 38°C

Correct answer: Immunosuppressed patients lack the typical inflammatory response and can deteriorate rapidly from occult bacteremia

Immunosuppression blunts fever and other signs of infection, meaning the patient may already be severely ill by the time symptoms appear, requiring prompt empiric coverage to prevent septic shock.

Question 32: A nurse works in a neighborhood recently hit by a hurricane. The nurse works to connect persons in need with housing and counseling. The nurse represents which degree of prevention.

Primary and secondary levels
Tertiary level (Correct answer)
Primary level
Secondary level

Correct answer: Tertiary level

Tertiary prevention focuses on rehabilitation, reducing the impact of an existing disease or injury, and preventing its progression. In this scenario, the hurricane has already occurred, and the nurse is providing housing and counseling, which are restorative and supportive services aimed at minimizing long-term effects and helping individuals recover, thus aligning with tertiary prevention.

Question 33: During a living donor kidney evaluation, the potential donor is found to have a glomerular filtration rate (GFR) of 72 mL/min/1.73 m². The transplant team should:

Decline the donor; GFR must be >80 mL/min for donation
Immediately approve donation as the GFR is within normal limits
Evaluate further with a 24-hour urine collection and repeat measurement (Correct answer)
Proceed with donation since GFR >60 mL/min is acceptable

Correct answer: Evaluate further with a 24-hour urine collection and repeat measurement

A borderline GFR requires further evaluation including 24-hour urine for creatinine clearance and protein to ensure safe residual function post-donation.

Question 34: A kidney transplant recipient's serum creatinine rises from 1.2 to 2.8 mg/dL at 6 months post-transplant without symptoms. What is the recommended next step?

Increase tacrolimus dose empirically
Obtain a kidney transplant biopsy to determine the cause (Correct answer)
Start pulse steroids empirically without biopsy
Reassure and recheck in one month

Correct answer: Obtain a kidney transplant biopsy to determine the cause

A significant rise in creatinine requires biopsy to differentiate between rejection, CNI toxicity, BK nephropathy, and other causes before initiating treatment.

Question 35: What is the primary purpose of performing a liver biopsy on a donor liver before transplantation?

To match histocompatibility antigens
To detect rejection before transplant
To evaluate for hepatitis C
To assess the degree of hepatic steatosis, which affects graft function (Correct answer)

Correct answer: To assess the degree of hepatic steatosis, which affects graft function

Donor liver biopsy primarily assesses macrovascular steatosis — livers with greater than 30–40% steatosis have increased risk of primary non-function.

Question 36: Which of the following patients must be assigned to a surgical unit nurse who is transferred to the general unit?

Emergency appendectomy (Correct answer)
Heart Failure
Thyrotoxicosis
New onset Type II- Diabetes

Correct answer: Emergency appendectomy

A nurse transferred from a surgical unit would possess specialized skills and experience in surgical patient care. An emergency appendectomy patient requires post-operative care directly related to surgical recovery, making this assignment the most appropriate and within the nurse's immediate area of expertise compared to general medical conditions.

Question 37: When assessing a transplant candidate's psychosocial readiness, which factor is considered an ABSOLUTE contraindication by most transplant programs?

Single marital status with adequate social support
History of treated depression
Active substance use disorder with ongoing use and denial (Correct answer)
History of non-compliance that has since been corrected

Correct answer: Active substance use disorder with ongoing use and denial

Active, ongoing substance use disorder — particularly with denial — represents an absolute contraindication at most centers because it directly predicts post-transplant non-adherence and poor outcomes.

Question 38: Which factor most significantly limits the acceptable cold ischemia time for heart transplantation compared to kidney transplantation?

Heart size compatibility requirements
The heart's sensitivity to ischemia makes the acceptable cold ischemia time much shorter (4–6 hours vs. 24–36 hours) (Correct answer)
Cardiac preservation solutions are less effective
Heart transplants require more extensive HLA matching

Correct answer: The heart's sensitivity to ischemia makes the acceptable cold ischemia time much shorter (4–6 hours vs. 24–36 hours)

The heart is highly sensitive to ischemic injury, limiting acceptable cold ischemia time to approximately 4–6 hours, compared to 24–36 hours for kidneys.

Question 39: A heart transplant nurse is teaching a recipient about cardiac allograft vasculopathy (CAV). Which statement BEST describes CAV?

CAV primarily affects the right coronary artery only
CAV presents with chest pain identical to classic angina because the heart is re-innervated
CAV is an acute rejection episode that resolves with steroid treatment
CAV is a diffuse, chronic immune-mediated coronary artery disease that is the leading cause of late graft loss in heart recipients (Correct answer)

Correct answer: CAV is a diffuse, chronic immune-mediated coronary artery disease that is the leading cause of late graft loss in heart recipients

CAV is a diffuse, concentric intimal hyperplasia of coronary vessels driven by chronic allograft immune injury and is the leading cause of death beyond the first year post-heart transplant.

Question 40: Panel Reactive Antibody (PRA) levels above what percentage indicate a highly sensitized transplant candidate?

10%
80% (Correct answer)
50%
20%

Correct answer: 80%

A PRA of 80% or higher indicates a highly sensitized patient with many preformed antibodies, making it difficult to find a compatible donor.

Question 41: Which blood group compatibility rule is universally applied in solid organ transplantation?

Only HLA matching is required, not ABO
ABO blood group compatibility between donor and recipient is required (Correct answer)
Blood type is irrelevant in deceased donor transplants
Donor and recipient must share the same Rh factor

Correct answer: ABO blood group compatibility between donor and recipient is required

ABO blood group compatibility is required in solid organ transplantation because ABO antigens are expressed on vascular endothelium and can trigger hyperacute rejection.

Question 42: What is the purpose of machine perfusion technology in organ preservation?

To continuously perfuse the organ with oxygenated solution, reducing ischemic injury and improving viability (Correct answer)
To remove pathogens from the donor organ
To perform pre-implantation biopsy
To precondition the organ with immunosuppressive agents

Correct answer: To continuously perfuse the organ with oxygenated solution, reducing ischemic injury and improving viability

Machine perfusion continuously delivers oxygenated preservation solution to the organ, reducing cold ischemia injury and allowing viability assessment beyond static cold storage.

Question 43: A kidney transplant patient presents with fever, dysuria, and a positive urine culture for E. coli. The transplant nurse recognizes that urinary tract infections post-transplant are particularly dangerous because:

They always lead to graft loss within 48 hours
E. coli is universally resistant to all antibiotics in transplant patients
UTIs cause irreversible tacrolimus toxicity
Immunosuppression masks symptoms and increases risk of urosepsis and pyelonephritis of the allograft (Correct answer)

Correct answer: Immunosuppression masks symptoms and increases risk of urosepsis and pyelonephritis of the allograft

Immunosuppression blunts the febrile and inflammatory response, allowing UTIs to progress rapidly to urosepsis or allograft pyelonephritis before clinical recognition.

Question 44: Which prophylactic medication is routinely prescribed to prevent Pneumocystis jirovecii pneumonia (PCP) in solid organ transplant recipients?

Fluconazole
Valganciclovir
Trimethoprim-sulfamethoxazole (TMP-SMX) (Correct answer)
Dapsone monotherapy

Correct answer: Trimethoprim-sulfamethoxazole (TMP-SMX)

TMP-SMX (Bactrim) is the first-line prophylactic agent for PCP in immunocompromised transplant patients due to its proven efficacy and broad coverage.

Question 45: Which class of HLA antigens is most important in kidney transplant matching?

HLA-A only
HLA-DR (Correct answer)
HLA-B only
HLA-C

Correct answer: HLA-DR

HLA-DR matching is considered the most clinically important in kidney transplantation due to its strong association with acute rejection rates and graft survival.

Question 46: Which of the following is a goal of patient evaluation for solid organ transplantation?

To evaluate the patient's ability to comply with long-term posttransplant follow up requirements
To determine if there are other options for managing the current disease
All of the above (Correct answer)
To determine if there are comorbidities that would contraindicate transplantation

Correct answer: All of the above

Patient evaluation for solid organ transplantation is a comprehensive process that addresses multiple critical aspects. It aims to determine if alternative treatments exist, assess the patient's ability to adhere to complex post-transplant regimens, and identify any comorbidities that could contraindicate transplantation or compromise its success. All these factors are crucial for successful transplant outcomes.

Question 47: A renal transplant patient on mycophenolate mofetil reports severe diarrhea and nausea. What is the most appropriate nursing intervention?

Discontinue MMF immediately without provider notification
Document and notify the provider — dose reduction or switch to EC-MPS may be needed (Correct answer)
Reassure the patient that GI side effects are expected and will resolve
Administer an antiemetic and continue the current dose

Correct answer: Document and notify the provider — dose reduction or switch to EC-MPS may be needed

GI toxicity is a common MMF side effect that may require dose reduction or conversion to enteric-coated mycophenolate sodium (EC-MPS) — the provider must be notified.

Question 48: A heart transplant patient presents with endomyocardial biopsy showing grade 2R rejection. This corresponds to which type of rejection?

Moderate acute cellular rejection (Correct answer)
Mild rejection requiring no treatment
Chronic rejection
Hyperacute rejection

Correct answer: Moderate acute cellular rejection

Grade 2R on the ISHLT scale represents moderate acute cellular rejection, typically requiring augmented immunosuppression.

Question 49: A transplant recipient presents with fever, productive cough, and CT findings showing bilateral ground-glass opacities three months post-transplant. Which organism should be highest on the differential?

Candida albicans
Streptococcus pneumoniae
Mycobacterium tuberculosis
Pneumocystis jirovecii (Correct answer)

Correct answer: Pneumocystis jirovecii

Ground-glass opacities on CT combined with fever and cough in the 1–6 month post-transplant window are classic for PCP, especially if prophylaxis was discontinued or inadequate.

Question 50: A transplant nurse is educating a renal transplant patient about food safety. Which of the following instructions is MOST appropriate?

Raw shellfish and undercooked meats should be strictly avoided (Correct answer)
Probiotic yogurt is contraindicated in all immunosuppressed patients
Avoid all fresh fruits and vegetables permanently
Grapefruit is safe in small amounts if taken away from medications

Correct answer: Raw shellfish and undercooked meats should be strictly avoided

Immunosuppressed transplant recipients are at high risk for foodborne illness from pathogens like Listeria and Vibrio, making raw shellfish and undercooked meats dangerous.

Question 51: How long after transplantation should female recipients wait before attempting pregnancy?

12 months
Pregnancy is permanently contraindicated after transplant
At least 1–2 years, when graft function is stable and immunosuppression is minimized (Correct answer)
6 months

Correct answer: At least 1–2 years, when graft function is stable and immunosuppression is minimized

Transplant guidelines recommend waiting 1–2 years post-transplant until graft function is stable and immunosuppression is at maintenance levels before attempting pregnancy.

Question 52: A transplant nurse uses the 'teach-back' method during patient education. What does this involve?

Teaching the same material multiple times in a row
Asking the patient to explain or demonstrate what they learned to confirm understanding (Correct answer)
Having the patient take a written test
Teaching the patient and then reviewing the same content the next day

Correct answer: Asking the patient to explain or demonstrate what they learned to confirm understanding

Teach-back involves asking patients to explain information in their own words or demonstrate skills, confirming comprehension rather than assuming it.

Question 53: A kidney transplant patient presents with fever, graft tenderness, and rising serum creatinine 10 days post-transplant. What is the most likely diagnosis?

Urinary tract infection
Renal artery stenosis
Cyclosporine toxicity
Acute cellular rejection (Correct answer)

Correct answer: Acute cellular rejection

Fever, graft tenderness, and rising creatinine in the first weeks post-transplant are classic signs of acute cellular rejection requiring biopsy confirmation.

Question 54: Which topic is most critical to include in discharge education for a new kidney transplant recipient?

Dietary restrictions for cholesterol management
Exercise guidelines for returning to sports
How to apply for disability benefits
Signs and symptoms of rejection and when to seek immediate care (Correct answer)

Correct answer: Signs and symptoms of rejection and when to seek immediate care

Teaching rejection warning signs (decreased urine output, fever, graft tenderness, rising creatinine) and when to seek care is the most critical discharge education topic.

Question 55: Basiliximab is an induction agent that acts by blocking which interleukin receptor?

IL-4 receptor
IL-17 receptor
IL-2 receptor (CD25) (Correct answer)
IL-6 receptor

Correct answer: IL-2 receptor (CD25)

Basiliximab is a monoclonal antibody that blocks the IL-2 receptor (CD25) on activated T cells, preventing IL-2-driven proliferation.

Question 56: Donation after Circulatory Death (DCD) differs from Donation after Brain Death (DBD) in what key way?

DCD organs are only used for tissue donation
DCD is only applicable in pediatric donors
DCD occurs after cessation of cardiac function rather than brain death declaration (Correct answer)
DCD requires family refusal of brain death criteria

Correct answer: DCD occurs after cessation of cardiac function rather than brain death declaration

In DCD, organ donation proceeds after the planned withdrawal of life support and confirmation of circulatory death, rather than after brain death declaration.

Question 57: Which immunosuppressant is an mTOR inhibitor used in transplantation?

Basiliximab
Cyclosporine
Sirolimus (Correct answer)
Azathioprine

Correct answer: Sirolimus

Sirolimus (rapamycin) is an mTOR inhibitor that blocks the intracellular signaling pathway required for T-cell proliferation after IL-2 stimulation.

Question 58: BK polyomavirus nephropathy is a significant concern primarily in which type of solid organ transplant recipient?

Heart transplant recipients
Liver transplant recipients
Kidney transplant recipients (Correct answer)
Lung transplant recipients

Correct answer: Kidney transplant recipients

BK virus predominantly replicates in the urothelium and tubular epithelium, making kidney transplant recipients the population most at risk for BK nephropathy and graft loss.

Question 59: Which term describes the production of donor-specific antibodies after transplantation that were not present before the procedure?

Allorecognition
De novo donor-specific antibody formation (Correct answer)
Primary sensitization
Passive immunity

Correct answer: De novo donor-specific antibody formation

De novo donor-specific antibody (DSA) formation refers to new antibodies produced after transplant targeting donor HLA antigens, associated with chronic antibody-mediated rejection.

Question 60: Calcineurin inhibitor nephrotoxicity can be distinguished from acute rejection by which finding?

Rejection always causes anuria while CNI toxicity does not
CNI toxicity responds to pulse steroids
Both show the same histologic pattern on biopsy
CNI nephrotoxicity is associated with high drug levels and tubular vacuolization without significant inflammation (Correct answer)

Correct answer: CNI nephrotoxicity is associated with high drug levels and tubular vacuolization without significant inflammation

CNI nephrotoxicity typically shows isometric tubular vacuolization on biopsy with elevated drug levels, while rejection shows inflammatory cell infiltration.

Question 61: A transplant nurse is educating a recipient about food safety. Which food should be specifically avoided to prevent Listeria monocytogenes infection?

Canned vegetables and commercially bottled juices
Well-cooked poultry and pasteurized dairy products
Unpasteurized soft cheeses and ready-to-eat deli meats (Correct answer)
Fresh fruits that are washed before consumption

Correct answer: Unpasteurized soft cheeses and ready-to-eat deli meats

Listeria thrives in refrigerated, ready-to-eat foods such as deli meats and soft cheeses made from unpasteurized milk, and causes severe invasive disease in immunocompromised transplant recipients.

Question 62: A lung transplant recipient develops bronchiolitis obliterans syndrome (BOS). How does BOS increase infection risk?

Impaired mucociliary clearance and airway structural changes create a favorable environment for bacterial colonization (Correct answer)
BOS directly suppresses neutrophil function and phagocytosis
BOS causes T-cell exhaustion, increasing viral reactivation risk
BOS triggers autoimmune destruction of bronchial-associated lymphoid tissue

Correct answer: Impaired mucociliary clearance and airway structural changes create a favorable environment for bacterial colonization

BOS damages the airway epithelium and mucociliary apparatus, impairing pathogen clearance and promoting chronic bacterial colonization with organisms like Pseudomonas aeruginosa.

Question 63: Which statement is TRUE regarding expanded criteria donors (ECD) for kidney transplantation?

ECD status applies to living donors over age 55
ECD kidneys have equivalent outcomes to standard criteria donor kidneys
ECD kidneys carry higher risk of delayed graft function but remain preferable to continued dialysis for most recipients (Correct answer)
ECD kidneys should only be offered to pediatric recipients

Correct answer: ECD kidneys carry higher risk of delayed graft function but remain preferable to continued dialysis for most recipients

ECD kidneys (from donors >60 or >50 with comorbidities) have higher rates of delayed graft function and reduced long-term survival, but for most dialysis patients the survival benefit of transplantation outweighs this risk.

Question 64: A liver transplant patient is started on sirolimus. Which side effect should the nurse educate the patient about?

Gingival hyperplasia
Uveitis
Peripheral neuropathy
Impaired wound healing and hyperlipidemia (Correct answer)

Correct answer: Impaired wound healing and hyperlipidemia

Sirolimus commonly causes impaired wound healing and hyperlipidemia, and is often avoided in the early post-transplant period for these reasons.

Question 65: A paracentesis is performed on a patient with end-stage liver disease to remove enormous ascites that is seriously limiting their ability to breathe. What is utilized to treat hyponatremia and renal impairment brought on by a reduced effective arterial volume?

Spironolactone
Acetazolamide
Albumin infusion (Correct answer)
Packed red blood cells

Correct answer: Albumin infusion

After a large-volume paracentesis in patients with end-stage liver disease, there is a risk of significant fluid shifts and reduced effective arterial volume, which can lead to complications like hyponatremia and renal impairment. Albumin infusion helps to maintain intravascular volume and oncotic pressure, thereby preventing these post-paracentesis complications.

Question 66: Which of the following is the most important factor in determining a patient's risk for rejection in the first year after transplant?

Recipient age
Donor BMI
Cold ischemia time
Number of HLA mismatches (Correct answer)

Correct answer: Number of HLA mismatches

The number of HLA mismatches between donor and recipient is the most important immunologic factor determining rejection risk in the first year post-transplant.

Question 67: Which immunosuppressant works by blocking the costimulatory signal required for T-cell activation?

Mycophenolate mofetil
Tacrolimus
Prednisone
Belatacept (Correct answer)

Correct answer: Belatacept

Belatacept is a CTLA-4 Ig fusion protein that blocks the CD28-B7 costimulatory pathway, preventing full T-cell activation without antigen signal blockade.

Question 68: A liver transplant patient taking mycophenolate mofetil (MMF) develops severe diarrhea. What is the MOST appropriate nursing response?

Recommend over-the-counter loperamide and continue MMF at the same dose
Notify the transplant team; MMF dose reduction or conversion to enteric-coated mycophenolate sodium may be indicated (Correct answer)
Advise the patient to increase dietary fiber to manage symptoms
Discontinue MMF immediately without consulting the team

Correct answer: Notify the transplant team; MMF dose reduction or conversion to enteric-coated mycophenolate sodium may be indicated

GI toxicity (diarrhea, nausea) is the most common MMF side effect and can lead to dehydration and non-adherence; dose reduction or formulation change requires transplant team evaluation to avoid compromising immunosuppression.

Question 69: What is the primary risk associated with a CMV-negative recipient receiving an organ from a CMV-positive donor?

Hyperacute rejection
Increased tacrolimus toxicity
Graft-versus-host disease
Primary CMV infection leading to CMV disease (Correct answer)

Correct answer: Primary CMV infection leading to CMV disease

A D+/R- mismatch places the recipient at highest risk for primary CMV disease because they lack prior immunity.

Question 70: Which organization manages the national deceased donor organ allocation system in the United States?

Joint Commission on Accreditation
United Network for Organ Sharing (UNOS) (Correct answer)
American Society of Transplantation (AST)
Centers for Medicare & Medicaid Services (CMS)

Correct answer: United Network for Organ Sharing (UNOS)

UNOS manages the national Organ Procurement and Transplantation Network (OPTN) and oversees policies for organ allocation to ensure equitable distribution.

Question 71: Post-transplant lymphoproliferative disorder (PTLD) is MOST strongly associated with which viral infection?

Cytomegalovirus (CMV)
Epstein-Barr virus (EBV) (Correct answer)
BK polyomavirus
Hepatitis C virus (HCV)

Correct answer: Epstein-Barr virus (EBV)

PTLD is strongly associated with EBV-driven B-cell proliferation occurring under immunosuppression, particularly in EBV-seronegative recipients of EBV-seropositive donors.

Question 72: A transplant coordinator is developing a transplant education program. Which teaching method is most effective for improving medication adherence?

Providing a written medication list at discharge only
Instructing family members only, not the patient
One verbal counseling session before discharge
Combining written materials, teach-back method, pill organizers, and follow-up reinforcement (Correct answer)

Correct answer: Combining written materials, teach-back method, pill organizers, and follow-up reinforcement

Multimodal education combining written materials, teach-back, organizational tools, and ongoing reinforcement is most effective for improving medication adherence in transplant recipients.

Question 73: Which complement pathway is primarily activated in antibody-mediated rejection?

Classical pathway (Correct answer)
Lectin pathway
Alternative pathway
Terminal pathway only

Correct answer: Classical pathway

The classical complement pathway is activated when donor-specific antibodies bind to graft endothelium, initiating the complement cascade in antibody-mediated rejection.

Question 74: Which opportunistic infection prophylaxis is standard for ALL solid organ transplant recipients in the first 3–6 months post-transplant?

Acyclovir for HSV only in seropositive donors
Trimethoprim-sulfamethoxazole (TMP-SMX) for Pneumocystis jirovecii (Correct answer)
Isoniazid for all recipients regardless of TB status
Fluconazole for Aspergillus

Correct answer: Trimethoprim-sulfamethoxazole (TMP-SMX) for Pneumocystis jirovecii

TMP-SMX is universally recommended for PCP prophylaxis in all solid organ transplant recipients during the high-immunosuppression period, and also provides coverage for Toxoplasma and Nocardia.

Question 75: What does the term 'crossmatch' refer to in transplantation?

Evaluating HLA antigen similarity
Comparing organ size compatibility
Testing recipient serum against donor lymphocytes for preformed antibodies (Correct answer)
Matching blood types between donor and recipient

Correct answer: Testing recipient serum against donor lymphocytes for preformed antibodies

A crossmatch tests whether recipient serum contains antibodies that react against donor cells, predicting hyperacute rejection risk.

Question 76: Which immunosuppressant is most associated with new-onset diabetes after transplantation (NODAT)?

Sirolimus
Tacrolimus (Correct answer)
Mycophenolate mofetil
Azathioprine

Correct answer: Tacrolimus

Tacrolimus has the highest association with new-onset diabetes after transplantation (NODAT) due to its toxic effects on pancreatic beta cells and insulin secretion.

Question 77: A transplant nurse is preparing to administer anti-thymocyte globulin (ATG) for induction therapy. Which of the following precautions is MOST important?

Obtain a urine culture before each dose
Premedicate with acetaminophen, diphenhydramine, and corticosteroids to reduce infusion reactions (Correct answer)
Monitor tacrolimus levels hourly during infusion
Administer as a rapid IV push over 5 minutes

Correct answer: Premedicate with acetaminophen, diphenhydramine, and corticosteroids to reduce infusion reactions

ATG commonly causes infusion reactions including fever, chills, and hypotension; premedication with antipyretics, antihistamines, and steroids is standard practice.

Question 78: A transplant recipient asks if they can get a flu shot. What is the most accurate nursing response?

Live attenuated vaccines are preferred for better immunity
Vaccines are unnecessary because immunosuppression prevents flu
Inactivated influenza vaccines are recommended annually; live vaccines are contraindicated (Correct answer)
All vaccines are contraindicated after transplantation

Correct answer: Inactivated influenza vaccines are recommended annually; live vaccines are contraindicated

Transplant recipients should receive inactivated vaccines (not live), including annual influenza vaccine, because live vaccines can cause disease in immunocompromised patients.

Question 79: Which statement about returning to work after kidney transplantation is most accurate?

Most recipients can return to work within 3–6 months if recovery is uncomplicated, depending on job type and graft function (Correct answer)
Return to work is not recommended due to infection risk in workplace environments
Recipients should return to work within 2 weeks to maintain normalcy
All transplant recipients are permanently disabled and cannot work

Correct answer: Most recipients can return to work within 3–6 months if recovery is uncomplicated, depending on job type and graft function

Most kidney transplant recipients with uncomplicated recovery can return to work within 3–6 months, though timeline varies by physical job demands and individual recovery.

Question 80: Which immunologic test is performed before transplantation to detect preformed donor-specific antibodies?

ELISA for ANA
Cross-match test (Correct answer)
Complement fixation test
Western blot

Correct answer: Cross-match test

The cross-match test mixes recipient serum with donor lymphocytes to detect preformed donor-specific antibodies that could cause rejection.

Question 81: A liver transplant recipient on tacrolimus is started on fluconazole for a fungal infection. What does the nurse anticipate?

Tacrolimus levels will increase due to CYP3A4 inhibition (Correct answer)
No interaction; the drugs have different metabolism pathways
Tacrolimus levels will decrease significantly
Mycophenolate levels will increase instead

Correct answer: Tacrolimus levels will increase due to CYP3A4 inhibition

Fluconazole is a potent CYP3A4 inhibitor that markedly reduces tacrolimus metabolism, causing drug levels to rise and increasing the risk of toxicity.

Question 82: A patient taking tacrolimus is prescribed rifampin for tuberculosis. What effect should the transplant nurse anticipate?

Tacrolimus levels will increase significantly
Tacrolimus will be contraindicated and must be stopped
Rifampin has no effect on tacrolimus levels
Tacrolimus levels will decrease significantly due to CYP3A4 induction (Correct answer)

Correct answer: Tacrolimus levels will decrease significantly due to CYP3A4 induction

Rifampin is a potent CYP3A4 inducer that markedly accelerates tacrolimus metabolism, requiring significant dose increases to maintain therapeutic levels.

Question 83: What is the significance of a positive cross-match in transplantation?

It predicts long-term graft survival
It indicates preformed antibodies that may cause rejection and is a contraindication (Correct answer)
It only affects kidney transplants
It indicates a good match and transplant should proceed

Correct answer: It indicates preformed antibodies that may cause rejection and is a contraindication

A positive cross-match indicates the recipient has preformed antibodies against donor antigens, which is generally a contraindication to transplantation due to high rejection risk.

Question 84: A deceased-donor organ allocation nurse receives a kidney offer for a highly sensitized patient with a panel reactive antibody (PRA) of 98%. What is the MOST critical pre-transplant test to perform?

Virtual or prospective crossmatch (Correct answer)
Renal biopsy of the donor kidney
ABO blood typing repeat
HLA-DR matching only

Correct answer: Virtual or prospective crossmatch

In highly sensitized recipients, a virtual or prospective crossmatch is critical to detect donor-specific antibodies (DSA) that could cause hyperacute rejection.

Question 85: Warm ischemia time in transplantation refers to which period?

Time from circulatory arrest to organ cooling in DCD, or from cross-clamp to reperfusion in DBD (Correct answer)
Time the organ spends at room temperature during anastomosis
Time between brain death and family consent
Time from organ cooling to transplantation

Correct answer: Time from circulatory arrest to organ cooling in DCD, or from cross-clamp to reperfusion in DBD

Warm ischemia time is when the organ lacks adequate perfusion at body temperature — in DCD donors this begins at circulatory arrest, and minimizing it is critical.

Question 86: The Kidney Donor Profile Index (KDPI) is used for what purpose?

To predict graft survival based on immunosuppression regimen
To calculate the recipient's waiting time on the transplant list
To determine the recipient's risk of rejection
To estimate the quality and expected function of a deceased donor kidney relative to the donor pool (Correct answer)

Correct answer: To estimate the quality and expected function of a deceased donor kidney relative to the donor pool

KDPI uses donor characteristics to estimate kidney quality — a higher KDPI indicates a greater risk of graft failure compared to the average donor kidney.

Question 87: A pediatric liver transplant patient is transitioning to adult care. Which nursing intervention is MOST critical for successful transition?

Delay transition until the patient requests it
Structured transition program teaching self-management, medication adherence, and adult healthcare navigation starting at age 12–14 (Correct answer)
Transfer all medical records before age 18 and end pediatric visits
Have parents continue managing medications indefinitely to ensure adherence

Correct answer: Structured transition program teaching self-management, medication adherence, and adult healthcare navigation starting at age 12–14

Early, structured transition programs that gradually transfer self-management responsibility are evidence-based and reduce the high rate of graft loss seen during adolescent transition to adult care.

Question 88: A transplant recipient reports that their partner feels their life revolves entirely around the transplant. Which approach best addresses this psychosocial concern?

Advise the partner to accept the situation without complaint
Advise the patient to minimize medical appointments to reduce burden on the partner
Document the concern without intervention
Refer the couple to transplant-specific counseling or support groups to address caregiver burden (Correct answer)

Correct answer: Refer the couple to transplant-specific counseling or support groups to address caregiver burden

Caregiver burden is a recognized psychosocial issue in transplantation; referral to transplant-specific counseling or support groups addresses both patient and caregiver needs.

Question 89: A renal transplant nurse notes a recipient's urine output drops from 200 mL/hr to 20 mL/hr at post-operative hour 6. What is the PRIORITY intervention?

Increase IV fluid rate to 300 mL/hr
Administer furosemide 40 mg IV
Check for Foley catheter kinking or obstruction first (Correct answer)
Call for emergent dialysis

Correct answer: Check for Foley catheter kinking or obstruction first

The first step in evaluating sudden oliguria post-transplant is to rule out a mechanical cause such as Foley catheter obstruction, which is common and easily correctable.

Question 90: A drop in central venous pressure after heart transplantation may be due to

Thombus obstruction
Cardiac tamponade
Increased intravascular volume
Low intravascular volume (Correct answer)

Correct answer: Low intravascular volume

Central Venous Pressure (CVP) reflects the pressure in the right atrium and is an indicator of right ventricular preload. A drop in CVP typically signifies decreased preload, meaning there is insufficient blood volume returning to the heart. The most common cause of decreased intravascular volume (hypovolemia), which can result from bleeding, dehydration, or inadequate fluid replacement post-surgery. Conditions like cardiac tamponade or increased intravascular volume would generally cause an *increase* in CVP.

Question 91: Which type of rejection occurs within minutes to hours after transplantation and is caused by preformed antibodies?

Accelerated acute rejection
Acute cellular rejection
Chronic rejection
Hyperacute rejection (Correct answer)

Correct answer: Hyperacute rejection

Hyperacute rejection occurs within minutes to hours due to preformed recipient antibodies against donor antigens, causing immediate graft failure.

Question 92: End-stage liver disease and uremia are both related with a metabolic imbalance called

Metabolic acidosis (Correct answer)
Respiratory acidosis
Respiratory alkalosis
Metabolic alkalosis

Correct answer: Metabolic acidosis

Both end-stage liver disease and uremia (kidney failure) are strongly associated with metabolic acidosis. In liver disease, the impaired liver cannot adequately metabolize acidic byproducts, contributing to acid accumulation. In uremia, the kidneys lose their ability to excrete acids and reabsorb bicarbonate, leading to a buildup of acid in the blood. This results in a decreased blood pH, characteristic of metabolic acidosis.

Question 93: A transplant recipient asks when it is safe to receive the inactivated influenza vaccine post-transplant. What is the recommended timing?

Immediately at discharge regardless of time post-transplant
Within the first 2 weeks post-transplant before immunosuppression takes effect
Influenza vaccine is permanently contraindicated in all transplant recipients
At least 3–6 months post-transplant when maintenance immunosuppression is stable (Correct answer)

Correct answer: At least 3–6 months post-transplant when maintenance immunosuppression is stable

Inactivated influenza vaccine is safe for transplant recipients but is most effective when given after the period of highest-intensity immunosuppression (3–6 months), when the immune response is more likely to be adequate.

Question 94: Which apnea test finding confirms brain death during donor evaluation?

Decreased oxygen saturation alone
Spontaneous respirations observed during the test
No spontaneous respirations with PaCO2 rising to ≥60 mmHg or 20 mmHg above baseline (Correct answer)
Positive corneal reflex

Correct answer: No spontaneous respirations with PaCO2 rising to ≥60 mmHg or 20 mmHg above baseline

A positive apnea test for brain death requires no spontaneous respirations despite a PaCO2 ≥60 mmHg or 20 mmHg above baseline, confirming absent brainstem function.

Question 95: Which immunosuppressant is associated with the development of post-transplant lymphoproliferative disorder (PTLD)?

Tacrolimus and overall high immunosuppression burden (Correct answer)
Azathioprine
Prednisone
Belatacept

Correct answer: Tacrolimus and overall high immunosuppression burden

PTLD is associated with high overall immunosuppression burden, particularly with EBV-driven B-cell proliferation; no single drug is solely responsible.

Question 96: What dietary counseling should a transplant nurse provide to a patient taking tacrolimus about grapefruit?

One glass of grapefruit juice per day is acceptable
Grapefruit only affects cyclosporine, not tacrolimus
Grapefruit is encouraged to boost immune function
Grapefruit and grapefruit juice must be avoided because they inhibit CYP3A4 and can dramatically increase tacrolimus levels (Correct answer)

Correct answer: Grapefruit and grapefruit juice must be avoided because they inhibit CYP3A4 and can dramatically increase tacrolimus levels

Grapefruit inhibits intestinal CYP3A4 enzymes, unpredictably elevating tacrolimus blood levels and risking toxicity — it must be completely avoided.

Question 97: The immunosuppression protocol known as induction therapy in transplantation refers to:

Prophylactic antibiotics given before surgery
Long-term low-dose steroids used to prevent rejection
Intensive immunosuppression given perioperatively to reduce early rejection risk (Correct answer)
Withdrawal of immunosuppression to test for tolerance

Correct answer: Intensive immunosuppression given perioperatively to reduce early rejection risk

Induction therapy uses potent immunosuppressive agents perioperatively to reduce the immune response when the allograft is most vulnerable to rejection.

Question 98: A kidney transplant recipient is found to have rising BK viremia on routine surveillance. What is the most appropriate initial intervention?

Immediately begin cidofovir infusions
Initiate high-dose intravenous acyclovir therapy
Reduce immunosuppression, particularly the antimetabolite dose (Correct answer)
Add fluoroquinolone antibiotics to suppress viral replication

Correct answer: Reduce immunosuppression, particularly the antimetabolite dose

The primary treatment for BK viremia in kidney transplant recipients is reduction of immunosuppression, which allows the host immune system to control viral replication, though this must be balanced against rejection risk.

Question 99: Which post-transplant complication is most strongly associated with Epstein-Barr virus (EBV) infection or reactivation in immunocompromised recipients?

Post-transplant lymphoproliferative disorder (PTLD) (Correct answer)
Aspergillus pneumonia
Cytomegalovirus retinitis
BK virus nephropathy

Correct answer: Post-transplant lymphoproliferative disorder (PTLD)

EBV drives uncontrolled B-cell proliferation under immunosuppression, leading to PTLD, a spectrum of disorders ranging from benign lymphoid hyperplasia to aggressive lymphoma.

Question 100: Which cytokine plays the most central role in T-cell activation during acute rejection?

TNF-alpha
IL-10
IL-4
IL-2 (Correct answer)

Correct answer: IL-2

IL-2 is the primary growth factor for T lymphocytes and plays a central role in T-cell proliferation during acute rejection episodes.

Question 101: Which psychological condition is most commonly seen in transplant recipients awaiting an organ on the waiting list?

Depression and anxiety (Correct answer)
Mania
Schizophrenia
Obsessive-compulsive disorder

Correct answer: Depression and anxiety

Depression and anxiety are highly prevalent in transplant candidates and recipients, driven by uncertainty, health burden, and life disruption, requiring regular psychosocial screening.

Question 102: A heart transplant recipient experiences symptomatic bradycardia and hypotension in the immediate post-operative period. This is MOST likely due to:

Perioperative myocardial infarction
Tacrolimus-induced conduction block
Cardiac denervation, as the transplanted heart lacks autonomic innervation (Correct answer)
Acute cellular rejection causing conduction abnormalities

Correct answer: Cardiac denervation, as the transplanted heart lacks autonomic innervation

The transplanted heart is surgically denervated and lacks direct autonomic control, making it dependent on circulating catecholamines and prone to bradycardia requiring chronotropic support.

Question 103: Which dietary instruction is important for transplant recipients to prevent foodborne infections?

Raw sushi is acceptable if from reputable restaurants
Avoid raw or undercooked meats, unpasteurized products, and unwashed produce due to immunocompromised status (Correct answer)
Food safety precautions are only needed in the first 3 months
Consume unpasteurized dairy products for probiotic benefits

Correct answer: Avoid raw or undercooked meats, unpasteurized products, and unwashed produce due to immunocompromised status

Immunocompromised transplant recipients must follow strict food safety practices because organisms like Salmonella, Listeria, and Cryptosporidium can cause severe or fatal infections.

Question 104: Which of the following is a common gastrointestinal side effect of mycophenolate mofetil (MMF)?

Constipation and bloating
Esophageal stricture
Diarrhea, nausea, and abdominal cramping (Correct answer)
Peptic ulcer disease

Correct answer: Diarrhea, nausea, and abdominal cramping

MMF commonly causes GI side effects including diarrhea, nausea, and cramping, which may be reduced by switching to enteric-coated mycophenolate sodium.

Question 105: A transplant nurse is educating a kidney recipient on sun protection. What is the primary reason transplant patients must rigorously avoid sun exposure?

Immunosuppression dramatically increases risk of skin cancers, especially squamous cell carcinoma (Correct answer)
Sun exposure reduces drug absorption
Tacrolimus causes photosensitivity rashes
UV light causes organ rejection

Correct answer: Immunosuppression dramatically increases risk of skin cancers, especially squamous cell carcinoma

Transplant recipients have up to 100 times increased risk of squamous cell carcinoma due to chronic immunosuppression impairing immune surveillance.

Question 106: A CMV-seronegative kidney recipient receives an organ from a CMV-seropositive donor (D+/R−). What is the standard prophylaxis approach?

Valganciclovir prophylaxis for 3–6 months post-transplant (Correct answer)
No prophylaxis needed; treat if symptoms arise
CMV hyperimmune globulin alone for 3 months
Ganciclovir IV for 2 weeks followed by monitoring only

Correct answer: Valganciclovir prophylaxis for 3–6 months post-transplant

D+/R− is the highest-risk CMV mismatch, and universal prophylaxis with valganciclovir for 3–6 months is the standard of care to prevent primary CMV disease.

Question 107: In a CMV donor-positive/recipient-negative (D+/R-) transplant scenario, what is the recommended management strategy?

Pre-emptive therapy based on weekly CMV PCR monitoring only
No prophylaxis needed since the recipient has no prior exposure
Acyclovir prophylaxis for the first 30 days
Universal prophylaxis with valganciclovir for 3–6 months (Correct answer)

Correct answer: Universal prophylaxis with valganciclovir for 3–6 months

D+/R- is the highest-risk CMV serostatus combination, requiring universal antiviral prophylaxis (valganciclovir) for 3–6 months post-transplant to prevent primary CMV disease.

Question 108: A kidney transplant nurse notes a patient's tacrolimus trough level is 18 ng/mL (target 8–12). What is the priority nursing action?

Double the next tacrolimus dose
Obtain a urine culture
Hold the next dose and notify the transplant physician (Correct answer)
Administer the next dose as scheduled

Correct answer: Hold the next dose and notify the transplant physician

A supratherapeutic tacrolimus level increases nephrotoxicity and neurotoxicity risk; the physician must be notified to adjust dosing.

Question 109: Which clinical finding differentiates hepatic artery thrombosis (HAT) from biliary stricture in a liver transplant recipient?

HAT presents only with fever and bacteremia
HAT causes dramatically elevated transaminases and can cause fulminant graft failure; biliary strictures cause cholestatic LFT pattern (Correct answer)
Both present identically; only biopsy distinguishes them
Biliary stricture causes graft failure while HAT causes cholestasis

Correct answer: HAT causes dramatically elevated transaminases and can cause fulminant graft failure; biliary strictures cause cholestatic LFT pattern

HAT presents acutely with ischemic hepatocyte injury (high AST/ALT) and can precipitate graft necrosis, while biliary strictures cause a more insidious cholestatic pattern with elevated bilirubin and alkaline phosphatase.

Question 110: Which lifestyle modification is most important to counsel a transplant recipient about for long-term cardiovascular health?

Low-protein diet to reduce graft workload
Avoiding all physical activity for the first year
Bed rest to protect the graft
Smoking cessation, regular exercise, and blood pressure management (Correct answer)

Correct answer: Smoking cessation, regular exercise, and blood pressure management

Cardiovascular disease is the leading cause of death in transplant recipients, so smoking cessation, exercise, and BP management are paramount lifestyle counseling topics.

Question 111: Which clinical presentation in a kidney transplant recipient should prompt immediate evaluation for CMV disease rather than simple viremia?

CMV IgG seroconversion without detectable viremia on PCR
Low-level CMV PCR positivity in a D-/R- recipient without any symptoms
CMV viremia with fever, leukopenia, thrombocytopenia, and organ-specific symptoms such as colitis or pneumonitis (Correct answer)
Asymptomatic CMV viremia detected on routine weekly surveillance PCR

Correct answer: CMV viremia with fever, leukopenia, thrombocytopenia, and organ-specific symptoms such as colitis or pneumonitis

CMV disease (as opposed to asymptomatic viremia) is defined by end-organ involvement with constitutional symptoms; the combination of viremia plus tissue-invasive findings requires prompt initiation of intravenous ganciclovir.

Question 112: A heart transplant patient is being evaluated six months post-transplant with an endomyocardial biopsy. The pathology report reads 'Grade 2R acute cellular rejection.' According to ISHLT grading, this indicates:

Mild rejection not requiring treatment
Moderate rejection requiring augmented immunosuppression (Correct answer)
No rejection; routine follow-up only
Severe rejection with hemodynamic compromise

Correct answer: Moderate rejection requiring augmented immunosuppression

Grade 2R (moderate) acute cellular rejection per ISHLT 2004 criteria typically warrants treatment with pulse steroids or augmented immunosuppression.

Question 113: What is the role of an Organ Procurement Organization (OPO) in the transplant process?

It provides immunosuppressive medications to transplant recipients
It performs transplant surgeries at regional hospitals
It coordinates organ donation, evaluation, allocation, and procurement from deceased donors (Correct answer)
It manages the transplant waiting list

Correct answer: It coordinates organ donation, evaluation, allocation, and procurement from deceased donors

OPOs coordinate all aspects of deceased donor organ procurement, including family consent, donor evaluation, organ allocation, and logistics.

Question 114: When counseling a female kidney transplant recipient of childbearing age about pregnancy, the transplant nurse should emphasize that:

Breastfeeding is encouraged to reduce maternal immunosuppression needs
Mycophenolate mofetil must be discontinued before conception due to teratogenicity (Correct answer)
Pregnancy is absolutely contraindicated for at least 10 years post-transplant
Tacrolimus levels typically need to be increased during pregnancy

Correct answer: Mycophenolate mofetil must be discontinued before conception due to teratogenicity

Mycophenolate mofetil (MMF) is a known teratogen associated with congenital malformations and must be switched to azathioprine at least 6 weeks before conception.

Question 115: Which term describes the phenomenon where a transplanted kidney does not function immediately after transplantation, requiring temporary dialysis?

Hyperacute rejection
Delayed graft function (DGF) (Correct answer)
Chronic allograft nephropathy
Primary non-function

Correct answer: Delayed graft function (DGF)

Delayed graft function (DGF) is when a transplanted kidney requires dialysis in the first week post-transplant, often due to ischemia-reperfusion injury.

Question 116: Cytomegalovirus (CMV) infection in transplant recipients is most severe in which donor-recipient combination?

CMV donor positive / recipient negative (D+/R-) (Correct answer)
CMV donor negative / recipient negative (D-/R-)
CMV donor negative / recipient positive (D-/R+)
CMV donor positive / recipient positive (D+/R+)

Correct answer: CMV donor positive / recipient negative (D+/R-)

The D+/R- combination carries the highest CMV risk because the recipient has no prior immunity against primary CMV infection transmitted from the seropositive donor.

Question 117: Which preservation solution is most commonly used for kidney preservation during cold storage?

Normal saline
Lactated Ringer's solution
Phosphate-buffered saline
University of Wisconsin (UW) solution (Correct answer)

Correct answer: University of Wisconsin (UW) solution

University of Wisconsin (UW) solution is the gold standard preservation fluid for kidney cold storage due to its composition that reduces ischemic cell damage.

Question 118: Which infection control precaution is most critical for transplant nurses to implement when caring for a transplant recipient with suspected Clostridioides difficile (C. diff) infection?

Contact precautions with gown and gloves, using soap and water for hand hygiene (not alcohol gel) (Correct answer)
Airborne precautions with N95 respirator and negative-pressure room
Standard precautions alone are sufficient for C. diff management
Droplet precautions with surgical mask and eye protection

Correct answer: Contact precautions with gown and gloves, using soap and water for hand hygiene (not alcohol gel)

C. difficile spores are not killed by alcohol-based hand sanitizers, so soap and water handwashing plus contact precautions (gown and gloves) are essential to prevent transmission.

Question 119: A parasite that most frequently spreads from animals to people through contact with infected animal feces. More frequent in the heart since it occurs in the cardiac muscle. Van imitates heart rejection.

Lyme Disease
Cytomegalovirus
Toxoplasmosis (Correct answer)
Corticosteroids

Correct answer: Toxoplasmosis

Toxoplasmosis, caused by the parasite *Toxoplasma gondii*, is often transmitted through contact with infected animal feces. In immunocompromised individuals, such as transplant recipients, it can cause myocarditis (inflammation of the heart muscle). The symptoms of toxoplasmosis-induced myocarditis can mimic those of heart rejection, making accurate diagnosis challenging but critical for appropriate treatment.

Question 120: Sirolimus (rapamycin) differs from tacrolimus in its mechanism of action by:

Blocking calcineurin and inhibiting IL-2 production
Depleting T-lymphocytes through complement-mediated lysis
Inhibiting mTOR signaling to block T-cell proliferation (Correct answer)
Blocking co-stimulatory signals between antigen-presenting cells and T-cells

Correct answer: Inhibiting mTOR signaling to block T-cell proliferation

Sirolimus inhibits the mammalian target of rapamycin (mTOR), blocking cytokine-driven T-cell proliferation at the G1-to-S phase transition.

Question 121: Regulatory T cells (Tregs) play what role in transplant immunology?

They suppress immune responses and may promote graft tolerance (Correct answer)
They produce donor-specific antibodies
They activate the complement cascade
They promote rejection by activating cytotoxic T cells

Correct answer: They suppress immune responses and may promote graft tolerance

Regulatory T cells suppress immune responses against the graft and are being studied as a means to promote tolerance and reduce rejection.

Question 122: A renal transplant recipient at 3 years post-transplant develops a skin lesion diagnosed as squamous cell carcinoma. What education should the transplant nurse prioritize?

Skin cancer risk is highest in the first 6 months and then normalizes
Sun protection, annual full-body skin exams, and awareness that immunosuppression significantly elevates skin cancer risk (Correct answer)
Discontinue mycophenolate immediately
This is unrelated to immunosuppression; routine dermatology follow-up only

Correct answer: Sun protection, annual full-body skin exams, and awareness that immunosuppression significantly elevates skin cancer risk

Transplant recipients have a 65–250 times higher risk of squamous cell carcinoma due to chronic immunosuppression, and lifelong sun protection plus annual dermatology screening is essential.

Question 123: Post-transplant lymphoproliferative disorder (PTLD) is most strongly associated with which viral infection?

BK polyomavirus
Epstein-Barr Virus (EBV) (Correct answer)
Cytomegalovirus (CMV)
Hepatitis C virus

Correct answer: Epstein-Barr Virus (EBV)

PTLD is most strongly associated with Epstein-Barr Virus (EBV), particularly in EBV-naive recipients receiving organs from EBV-seropositive donors.

Question 124: What does 'first-person consent' mean in the context of organ donation in the US?

Only next-of-kin can authorize donation
An individual's documented decision to donate (e.g., on a driver's license) is legally binding (Correct answer)
A physician must obtain consent before any family member
Family must provide first consent before a donor registry is consulted

Correct answer: An individual's documented decision to donate (e.g., on a driver's license) is legally binding

First-person consent means a person's registered decision to donate is legally binding and cannot be overridden by family, though family collaboration is still encouraged.

Question 125: Which of the following cytomegalovirus (CMV) serostatus combinations carries the HIGHEST risk for CMV disease post-transplant?

Donor positive / Recipient negative (D+/R-) (Correct answer)
Donor positive / Recipient positive (D+/R+)
Donor negative / Recipient negative (D-/R-)
Donor negative / Recipient positive (D-/R+)

Correct answer: Donor positive / Recipient negative (D+/R-)

A CMV-seropositive donor transplanted into a seronegative recipient (D+/R-) poses the highest risk because the recipient has no pre-existing immunity.

Question 126: Which laboratory trend is MOST consistent with calcineurin inhibitor (CNI) nephrotoxicity in a stable kidney transplant recipient?

Proteinuria >3 g/day with subnephrotic creatinine
Gradual creatinine rise with supratherapeutic CNI trough levels and no proteinuria (Correct answer)
Sudden 30% rise in creatinine with fever and graft tenderness
Eosinophilia with hematuria

Correct answer: Gradual creatinine rise with supratherapeutic CNI trough levels and no proteinuria

CNI nephrotoxicity typically presents as a gradual, dose-dependent rise in creatinine associated with elevated drug troughs, without the systemic signs of rejection.

Question 127: A lung transplant recipient reports new-onset dyspnea and a 10% decline in FEV1 at the 12-month clinic visit. Which condition should the transplant nurse suspect?

Pulmonary embolism
Chronic lung allograft dysfunction (CLAD)/BOS (Correct answer)
Pneumocystis jirovecii pneumonia
Acute cellular rejection

Correct answer: Chronic lung allograft dysfunction (CLAD)/BOS

A persistent decline in FEV1 beyond the early post-transplant period is the hallmark of bronchiolitis obliterans syndrome (BOS), the most common form of chronic lung allograft dysfunction.

Question 128: When should a transplant nurse administer the morning dose of tacrolimus relative to blood draws for trough levels?

It does not matter — timing has no effect on levels
Before the blood draw is collected
Two hours after the blood draw
After the blood draw is collected (Correct answer)

Correct answer: After the blood draw is collected

Tacrolimus trough levels must be drawn before administering the morning dose to accurately reflect the lowest drug concentration during the dosing interval.

Question 129: Which statement best describes tolerance in transplantation?

The recipient accepts the graft without ongoing immunosuppression (Correct answer)
The recipient's immune system is permanently suppressed
The donor kidney functions normally without HLA matching
The graft is rejected slowly over years

Correct answer: The recipient accepts the graft without ongoing immunosuppression

Operational tolerance means the recipient's immune system accepts the graft as self without requiring long-term immunosuppressive therapy.

Question 130: What is 'delayed graft function' (DGF) in kidney transplantation?

Gradual improvement of creatinine over 3 months
Failure to urinate intraoperatively
Need for dialysis within the first week post-transplant due to ATN (Correct answer)
Rejection occurring within 24 hours

Correct answer: Need for dialysis within the first week post-transplant due to ATN

DGF is defined as the need for dialysis in the first week post-transplant and is most commonly caused by ischemia-reperfusion injury leading to ATN.

Question 131: A nurse caring for a patient scheduled for surgery discovers that the patient cannot sign the permission form because of narcotic analgesics. Instead of the patient, who should sign the permission form?

One family member can sign with two witnesses signatures (Correct answer)
Patient can go to surgery without a consent
Court signs the consent
The hospital chaplain should sign the consent

Correct answer: One family member can sign with two witnesses signatures

If a patient is incapacitated due to medication and cannot provide informed consent, a legally authorized representative, typically a family member, can sign the consent form. To ensure validity and proper documentation, this process usually requires the signatures of two witnesses who can attest to the signing and the patient's inability to consent.

Question 132: Which laboratory value is most specific for monitoring liver graft function in the immediate post-transplant period?

Serum sodium
Serum creatinine
Prothrombin time/INR (Correct answer)
White blood cell count

Correct answer: Prothrombin time/INR

The liver synthesizes clotting factors, so PT/INR reflects liver synthetic function and is a sensitive early marker of graft performance.

Question 133: Prednisone is used in transplant regimens primarily for which mechanism?

Selective T-cell depletion
Inhibition of IL-2 production specifically
Blocking B-cell antibody production
Broad anti-inflammatory and immunosuppressive effects via glucocorticoid receptor activation (Correct answer)

Correct answer: Broad anti-inflammatory and immunosuppressive effects via glucocorticoid receptor activation

Prednisone acts through glucocorticoid receptors to broadly suppress inflammation and immune activation, making it useful as maintenance and anti-rejection therapy.

Question 134: A liver transplant patient develops ascites and elevated liver enzymes 2 weeks post-operatively. What complication should be suspected first?

Acute rejection
Hepatic artery thrombosis (Correct answer)
Bile leak
Drug-induced hepatotoxicity

Correct answer: Hepatic artery thrombosis

Hepatic artery thrombosis is a serious early complication of liver transplant that compromises biliary and hepatic perfusion, presenting with liver dysfunction and ascites.

Question 135: Which complication is indicated by a sudden cessation of urine output, graft pain, and hematuria in an early post-kidney-transplant patient?

Renal vein thrombosis (Correct answer)
Acute tubular necrosis
Urinary tract infection
Lymphocele

Correct answer: Renal vein thrombosis

Sudden anuria with graft pain and hematuria in the early post-transplant period suggests renal vein thrombosis, a surgical emergency requiring immediate intervention.

Question 136: Which condition is BK polyomavirus nephropathy MOST likely to be mistaken for on kidney transplant biopsy, creating a diagnostic challenge?

CNI toxicity
Recurrent focal segmental glomerulosclerosis
Acute cellular rejection (T-cell mediated) (Correct answer)
Chronic antibody-mediated rejection

Correct answer: Acute cellular rejection (T-cell mediated)

BK nephropathy causes tubulitis and interstitial nephritis that histologically mimics acute T-cell-mediated rejection, but treatment differs radically — steroids for rejection vs. immunosuppression reduction for BK.

Question 137: Which transplant patient situation requires mandatory referral to social work?

Patient asks questions about medication side effects
Patient has questions about returning to work
Patient requests a second medical opinion
Patient expresses inability to afford medications or housing instability (Correct answer)

Correct answer: Patient expresses inability to afford medications or housing instability

Financial instability and housing insecurity are social determinants that directly threaten medication adherence and graft survival, requiring urgent social work intervention.

Question 138: Which statement accurately describes maintenance immunosuppression in transplantation?

It is given only during rejection episodes
It is weaned off after 1 year post-transplant
It is only required for high-immunologic-risk patients
It consists of lifelong medications to prevent rejection (Correct answer)

Correct answer: It consists of lifelong medications to prevent rejection

Maintenance immunosuppression consists of lifelong medications that continuously suppress the immune system to prevent rejection of the transplanted organ.

Question 139: Which cardiovascular complication is the leading cause of death in long-term kidney transplant recipients?

Cardiovascular disease (CAD, MI, stroke) (Correct answer)
Arrhythmia from tacrolimus
Aortic aneurysm
Pulmonary embolism

Correct answer: Cardiovascular disease (CAD, MI, stroke)

Cardiovascular disease is the leading cause of death in long-term kidney transplant recipients, driven by traditional risk factors amplified by CNIs, steroids, and chronic kidney disease.

Question 140: Which post-transplant complication is caused by lymphatic disruption during surgery and typically presents as a fluid collection near the kidney?

Lymphocele (Correct answer)
Hematoma
Perinephric abscess
Urinoma

Correct answer: Lymphocele

Lymphocele is a collection of lymphatic fluid that forms near the transplanted kidney due to lymphatic disruption during surgery and may compress the ureter or iliac vein.

Question 141: Which medication is used as induction therapy in transplantation and works by depleting T lymphocytes?

Anti-thymocyte globulin (ATG) (Correct answer)
Mycophenolate mofetil
Tacrolimus
Prednisone

Correct answer: Anti-thymocyte globulin (ATG)

Anti-thymocyte globulin (ATG) is a polyclonal antibody used for induction that rapidly depletes T lymphocytes, reducing the risk of early acute rejection.

Question 142: Which of the following is a classic sign of acute rejection in a kidney transplant recipient?

Hypoglycemia and jaundice
Polyuria and hypotension
Oliguria, rising creatinine, and graft tenderness (Correct answer)
Fever and skin rash only

Correct answer: Oliguria, rising creatinine, and graft tenderness

Acute kidney rejection typically presents with decreased urine output, rising serum creatinine, and tenderness over the transplanted kidney.

Question 143: Which side effect is most associated with long-term tacrolimus use in transplant recipients?

Hepatotoxicity
Peripheral neuropathy
Hypertension and nephrotoxicity (Correct answer)
Gingival hyperplasia

Correct answer: Hypertension and nephrotoxicity

Long-term tacrolimus use commonly causes nephrotoxicity and hypertension, both of which require ongoing monitoring in transplant recipients.

Question 144: A liver transplant patient develops elevated bilirubin and alkaline phosphatase with a normal hepatic artery Doppler 6 weeks post-transplant. MRCP shows a stricture at the biliary anastomosis. The BEST initial treatment is:

Increase immunosuppression to treat rejection
Endoscopic retrograde cholangiopancreatography (ERCP) with balloon dilation and stenting (Correct answer)
Emergency surgical revision
Liver re-transplantation

Correct answer: Endoscopic retrograde cholangiopancreatography (ERCP) with balloon dilation and stenting

Anastomotic biliary strictures post-liver transplant are first managed endoscopically with ERCP balloon dilation and stenting, which is effective in most cases.

Question 145: A transplant recipient is prescribed trimethoprim-sulfamethoxazole (TMP-SMX) prophylaxis. The PRIMARY indication for this medication in this population is:

Prevention of cytomegalovirus infection
Prophylaxis against Pneumocystis jirovecii pneumonia (PCP) (Correct answer)
Treatment of bacterial UTI
Prevention of fungal esophagitis

Correct answer: Prophylaxis against Pneumocystis jirovecii pneumonia (PCP)

TMP-SMX is the drug of choice for Pneumocystis jirovecii pneumonia prophylaxis in immunosuppressed transplant recipients, typically given for 6-12 months post-transplant.

Question 146: What is the primary role of the transplant coordinator in patient care?

To prescribe immunosuppressive medications
To evaluate organ allocation decisions
To perform organ procurement surgeries
To serve as the primary point of contact, coordinating care across the transplant team and providing patient education and support (Correct answer)

Correct answer: To serve as the primary point of contact, coordinating care across the transplant team and providing patient education and support

The transplant coordinator is the central communication hub for the patient, coordinating care across surgeons, nephrologists, pharmacists, social workers, and other team members.

Question 147: Surgery for a right leg allograft is scheduled for a patient with extensive burns. What aspects of this patient's post-operative treatment plan must be considered?

Keep the right leg flat
Keep the patient in prone position
Immobilize and elevate the right leg (Correct answer)
Keep blanket above the right leg

Correct answer: Immobilize and elevate the right leg

For an allograft (tissue transplant) like a skin graft, proper post-operative care is crucial for graft survival. Immobilizing the affected limb prevents movement that could dislodge the graft, while elevating it helps reduce swelling and promotes venous return, both of which are vital for successful graft take and healing.

Question 148: BK virus nephropathy in kidney transplant recipients is best monitored by:

Serial serum BK virus PCR (BK viremia) testing (Correct answer)
Annual kidney biopsy regardless of creatinine
Daily urinalysis for decoy cells only
Monthly chest X-rays

Correct answer: Serial serum BK virus PCR (BK viremia) testing

Serum BK PCR (viremia) is the standard surveillance tool; BK viremia >10,000 copies/mL warrants immunosuppression reduction to prevent nephropathy.

Question 149: What is the most common reason for graft loss in long-term kidney transplant recipients related to patient behavior?

Excessive exercise damaging the graft
Non-adherence to immunosuppressive medications (Correct answer)
Dietary non-compliance causing metabolic syndrome
Failure to attend annual follow-up appointments

Correct answer: Non-adherence to immunosuppressive medications

Non-adherence to immunosuppressive medications is the leading preventable cause of late graft loss, often resulting in chronic rejection.

Question 150: A liver transplant recipient reports drinking alcohol occasionally. What is the most appropriate nursing response?

Advise the patient to limit to one drink per week
Alcohol is absolutely contraindicated after liver transplantation due to risk of graft injury and recurrence of alcoholic liver disease (Correct answer)
Moderate alcohol is acceptable after liver transplantation
Occasional alcohol is only concerning if liver enzymes are elevated

Correct answer: Alcohol is absolutely contraindicated after liver transplantation due to risk of graft injury and recurrence of alcoholic liver disease

Alcohol is contraindicated after liver transplantation because it can damage the graft and cause recurrence of alcoholic liver disease, threatening graft survival.

Question 151: What is the recommended prophylaxis for Pneumocystis jirovecii pneumonia (PJP) in solid organ transplant recipients?

Fluconazole
Trimethoprim-sulfamethoxazole (TMP-SMX) (Correct answer)
Voriconazole
Acyclovir

Correct answer: Trimethoprim-sulfamethoxazole (TMP-SMX)

TMP-SMX (Bactrim) is the first-line prophylaxis for PJP in transplant recipients and also provides coverage against Toxoplasma and some urinary tract pathogens.

Question 152: A transplant patient says they cannot afford their medications. What is the most appropriate nursing action?

Connect the patient with social work, patient assistance programs, and transplant coordinators to address financial barriers (Correct answer)
Advise the patient to skip non-critical medications to save money
Advise the patient to use half doses to stretch their supply
Document the concern and continue without intervention

Correct answer: Connect the patient with social work, patient assistance programs, and transplant coordinators to address financial barriers

Financial barriers to medication access are a major adherence threat — the transplant team's social worker and patient assistance programs must be engaged immediately.

Question 153: In organ procurement, the term 'cold ischemia time' refers to:

Time from donor brain death declaration to incision
Time from organ perfusion with cold preservation solution to revascularization in the recipient (Correct answer)
Time from recipient incision to graft reperfusion
Duration the organ spends in the operating room

Correct answer: Time from organ perfusion with cold preservation solution to revascularization in the recipient

Cold ischemia time begins when the organ is flushed with cold preservation solution and ends when blood flow is restored to the organ in the recipient.

Question 154: A post-liver transplant patient on prednisone and tacrolimus reports new-onset polydipsia, polyuria, and fatigue. Fasting glucose is 210 mg/dL. The MOST likely diagnosis is:

Adrenal insufficiency from steroid withdrawal
Tacrolimus nephrotoxicity
Hepatitis C recurrence
New-onset diabetes after transplantation (NODAT) (Correct answer)

Correct answer: New-onset diabetes after transplantation (NODAT)

New-onset diabetes after transplantation (NODAT) is common and is driven by glucocorticoid-induced insulin resistance and calcineurin inhibitor-mediated beta-cell toxicity.

Question 155: A pancreas transplant recipient develops hyperglycemia 1 week post-transplant. What is the most urgent complication to rule out?

Steroid-induced hyperglycemia
Pancreatic graft thrombosis (Correct answer)
Dietary non-compliance
Tacrolimus-induced diabetes

Correct answer: Pancreatic graft thrombosis

Pancreatic graft thrombosis is the most common cause of early pancreas graft loss and presents with sudden hyperglycemia — vascular imaging is urgently required.

Question 156: A heart transplant patient develops a new resting heart rate of 58 bpm with fatigue and dyspnea on post-operative day 10. What etiology should the nurse prioritize?

Acute cellular rejection (Correct answer)
Donor heart denervation effect
Sinus bradycardia from vagal tone
Beta-blocker toxicity

Correct answer: Acute cellular rejection

New fatigue and dyspnea with hemodynamic changes in the first weeks post-heart transplant are classic signs of acute cellular rejection until proven otherwise and require urgent endomyocardial biopsy.

Question 157: A kidney transplant recipient on tacrolimus develops a serum creatinine rise from 1.2 to 2.8 mg/dL on post-op day 5. The most appropriate next step is:

Increase tacrolimus dose immediately
Start high-dose IV methylprednisolone empirically
Obtain a renal biopsy to differentiate rejection from tacrolimus nephrotoxicity (Correct answer)
Discontinue tacrolimus and switch to cyclosporine

Correct answer: Obtain a renal biopsy to differentiate rejection from tacrolimus nephrotoxicity

A renal biopsy is the gold standard to distinguish acute rejection from calcineurin inhibitor nephrotoxicity, as treatment differs significantly.

Question 158: Which statement about calcineurin inhibitor-induced hypertension in transplant recipients is accurate?

It occurs in less than 10% of transplant recipients
It only occurs with cyclosporine, not tacrolimus
It affects over 50% of transplant recipients and increases cardiovascular risk (Correct answer)
It resolves spontaneously within 6 months

Correct answer: It affects over 50% of transplant recipients and increases cardiovascular risk

CNI-induced hypertension affects the majority of transplant recipients and significantly contributes to cardiovascular morbidity and mortality in this population.

Question 159: What is the primary mechanism by which trimethoprim-sulfamethoxazole provides prophylaxis against Toxoplasma gondii in transplant recipients?

It inhibits folate synthesis, which is essential for Toxoplasma replication (Correct answer)
It stimulates innate immune recognition of the parasite
It disrupts the parasite's cell membrane permeability
It blocks Toxoplasma entry into host macrophages

Correct answer: It inhibits folate synthesis, which is essential for Toxoplasma replication

TMP-SMX inhibits dihydrofolate reductase and dihydropteroate synthase, blocking folate synthesis required for Toxoplasma DNA replication, providing concurrent PCP and toxoplasma prophylaxis.

Question 160: A pancreas transplant patient develops hyperglycemia and elevated serum amylase/lipase 2 weeks post-transplant with a normal kidney function (simultaneous pancreas-kidney recipient). This is MOST suggestive of:

Kidney allograft rejection
Pancreas allograft rejection or pancreatitis (Correct answer)
Cytomegalovirus hepatitis
Surgical anastomotic leak from the bowel

Correct answer: Pancreas allograft rejection or pancreatitis

In simultaneous pancreas-kidney (SPK) transplant, rising glucose combined with elevated pancreatic enzymes suggests pancreas rejection or graft pancreatitis.

Question 161: A heart transplant patient is prescribed azathioprine. What lab value requires close monitoring?

Serum calcium
Serum creatinine
Serum potassium
Complete blood count (CBC) (Correct answer)

Correct answer: Complete blood count (CBC)

Azathioprine causes bone marrow suppression, so CBC monitoring is essential to detect leukopenia, thrombocytopenia, and anemia.

Question 162: Which serologic test must be negative in a potential organ donor to prevent transmission of HIV to the transplant recipient?

CMV IgG
HIV-1/2 antibody and HIV NAT (nucleic acid testing) (Correct answer)
HBsAg only
Anti-HCV antibody

Correct answer: HIV-1/2 antibody and HIV NAT (nucleic acid testing)

Both HIV antibody testing and nucleic acid testing (NAT) are performed on donors to minimize the window period and prevent HIV transmission to recipients.

Question 163: How should a transplant nurse counsel a patient about sun exposure after transplantation?

Sun protection is only needed in the first year post-transplant
Sun exposure is encouraged to increase vitamin D production
Transplant recipients have significantly increased risk of skin cancer and must use high SPF sunscreen and protective clothing daily (Correct answer)
Only melanoma risk is increased — other skin exposures are safe

Correct answer: Transplant recipients have significantly increased risk of skin cancer and must use high SPF sunscreen and protective clothing daily

Immunosuppression dramatically increases skin cancer risk (up to 100-fold for squamous cell carcinoma), requiring lifelong sun protection and regular dermatologic follow-up.

Question 164: What is the rationale for using triple immunosuppression therapy in most solid organ transplant protocols?

To reduce cost by using lower doses of each drug
To comply with UNOS regulations
To block multiple pathways of immune activation while minimizing individual drug toxicity (Correct answer)
To ensure at least one drug is effective if one fails

Correct answer: To block multiple pathways of immune activation while minimizing individual drug toxicity

Triple therapy targets different steps in the immune activation pathway, allowing lower doses of each agent and reducing toxicity while maintaining effective rejection prevention.

Question 165: The direct pathway of allorecognition involves recipient T cells recognizing donor antigens presented by which cells?

Donor antigen-presenting cells (Correct answer)
Recipient antigen-presenting cells
Recipient B cells
Natural killer cells

Correct answer: Donor antigen-presenting cells

In the direct pathway, recipient T cells recognize intact donor MHC molecules presented directly on donor antigen-presenting cells.

Question 166: Tacrolimus exerts its immunosuppressive effect by inhibiting which enzyme?

Calcineurin (Correct answer)
Inosine monophosphate dehydrogenase
mTOR
Janus kinase

Correct answer: Calcineurin

Tacrolimus inhibits calcineurin, preventing IL-2 transcription and thereby blocking T-cell activation and proliferation.

Question 167: What is the primary purpose of the UNOS (United Network for Organ Sharing)?

Training transplant nurses
Performing transplant surgeries
Funding transplant research
Managing the national organ transplant system and waitlist (Correct answer)

Correct answer: Managing the national organ transplant system and waitlist

UNOS manages the national organ transplant system under contract with HRSA, maintaining the waitlist and matching policies.

Question 168: Which donor-derived infection poses the HIGHEST risk of undetected transmission during the standard infectious disease screening window period?

Cytomegalovirus (CMV)
Hepatitis B virus (HBV)
Epstein-Barr virus (EBV)
HIV during acute infection (NAT window period) (Correct answer)

Correct answer: HIV during acute infection (NAT window period)

HIV NAT testing has a window period during acute infection when viral load may be below detection limits, making recent high-risk donor behavior the primary residual transmission risk.

Question 169: Which finding in a liver transplant recipient at post-operative day 3 would be MOST concerning for primary non-function (PNF)?

Serum bilirubin 3.2 mg/dL
Mild ascites on ultrasound
ALT 500 IU/L with improving trend
AST >5,000 IU/L with coagulopathy and rising creatinine (Correct answer)

Correct answer: AST >5,000 IU/L with coagulopathy and rising creatinine

Markedly elevated transaminases (>5,000 IU/L) combined with coagulopathy and renal failure in the early post-transplant period are hallmarks of primary non-function, a graft-threatening emergency.

Question 170: A liver transplant recipient develops new-onset hypertension and nephrotoxicity. Which immunosuppressant is most likely responsible?

Mycophenolate mofetil
Tacrolimus (Correct answer)
Sirolimus
Azathioprine

Correct answer: Tacrolimus

Tacrolimus (a calcineurin inhibitor) is a common cause of nephrotoxicity and hypertension in transplant recipients.

Question 171: Which of the following best describes 'hyperacute rejection' in solid organ transplantation?

Pre-formed recipient antibodies cause graft thrombosis within minutes to hours of reperfusion (Correct answer)
NK cell-mediated rejection occurring in the first 24 hours
T-cell mediated rejection occurring 5-7 days post-transplant
Chronic fibrosis of the graft occurring years after transplant

Correct answer: Pre-formed recipient antibodies cause graft thrombosis within minutes to hours of reperfusion

Hyperacute rejection is caused by pre-formed donor-specific antibodies that bind immediately upon reperfusion, activating complement and causing microvascular thrombosis.

Question 172: Cyclosporine A is associated with which distinctive cosmetic side effect not seen with tacrolimus?

Gingival hyperplasia (Correct answer)
Alopecia
Moon face
Acne

Correct answer: Gingival hyperplasia

Gingival hyperplasia is a distinctive side effect of cyclosporine that is not typically seen with tacrolimus, making dental hygiene especially important.

Question 173: C4d deposition on peritubular capillaries is a hallmark finding in which type of renal transplant rejection?

Hyperacute rejection
Acute cellular rejection
Antibody-mediated rejection (Correct answer)
Chronic cellular rejection

Correct answer: Antibody-mediated rejection

C4d deposition on peritubular capillaries is a pathologic marker of antibody-mediated rejection, indicating complement activation by donor-specific antibodies.

Question 174: Which donor characteristic increases the risk of disease transmission to the transplant recipient?

Donor age over 65
Cold ischemia time over 12 hours
Donor hypertension
Recent high-risk behaviors for bloodborne infections (Correct answer)

Correct answer: Recent high-risk behaviors for bloodborne infections

Recent high-risk behaviors (IV drug use, unprotected sex with multiple partners) increase the risk of bloodborne disease transmission despite negative donor testing.

Question 175: A kidney transplant recipient with a high temperature, discomfort at the surgical site, leukocytosis, malfunction of the renal allograft, and silt in the urine. Which diagnostic procedure is recommended?

Clean-catch midstream urine specimen for culture (bacterial and fungal) (Correct answer)
Catheterized urine specimen for culture and blood culture
Categorized urine specimen for culture
A cLean-catch midstream urine specimen for urinalysis

Correct answer: Clean-catch midstream urine specimen for culture (bacterial and fungal)

The patient's symptoms—high temperature, surgical site discomfort, leukocytosis, renal allograft malfunction, and 'silt' in the urine—strongly suggest a urinary tract infection (UTI) or pyelonephritis, which is a serious concern in transplant recipients. A clean-catch midstream urine specimen for bacterial and fungal culture is the most appropriate diagnostic procedure. This test helps identify the specific causative organism, guiding targeted antimicrobial therapy, and minimizes contamination compared to a simple urinalysis.

Question 176: Which drug interaction is most clinically significant for transplant patients taking tacrolimus?

Concurrent use of aspirin
CYP3A4 inhibitors such as fluconazole significantly increase tacrolimus levels (Correct answer)
Vitamin C supplementation
Concurrent use of beta blockers

Correct answer: CYP3A4 inhibitors such as fluconazole significantly increase tacrolimus levels

Tacrolimus is metabolized by CYP3A4, so inhibitors like azole antifungals can dramatically increase tacrolimus blood levels, risking toxicity.

Question 177: A kidney transplant recipient presents with a creatinine that has doubled over 5 days with no fever, oliguria, or graft tenderness, and a therapeutic tacrolimus level. What is the MOST appropriate next diagnostic step?

Increase tacrolimus dose to higher target
Empiric pulse-dose steroids for presumed rejection
Renal transplant biopsy to differentiate rejection from other causes (Correct answer)
Initiate dialysis immediately

Correct answer: Renal transplant biopsy to differentiate rejection from other causes

A transplant biopsy is the gold standard for diagnosing the cause of graft dysfunction and distinguishing acute rejection from CNI toxicity, BK nephropathy, or recurrent disease.

Certified Clinical Transplant Nurse (CCTN)

The CCTN certification, administered by the American Board for Transplant Certification (ABTC), validates nursing expertise in pre- and post-transplant care, immunosuppression management, and long-term transplant patient support across solid organ transplantation.

175

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180 min

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