Veterinary Technician National Examination (VTNE) — Questions and Answers

Question 1: When performing an abdominal ultrasound on a cat with a suspected linear foreign body, which of the following findings is most pathognomonic for this condition?

Acoustic shadowing from a mineral-dense object
Segmental thickening of the small intestinal wall
Plication or 'bunching' of the small intestines (Correct answer)
Generalized hyperechoic mesentery suggestive of peritonitis

Correct answer: Plication or 'bunching' of the small intestines

While other signs may be present, the most characteristic ultrasonographic finding for a linear foreign body is the plication, or accordion-like bunching, of the intestines as they attempt to move the fixed linear object via peristalsis.

Question 2: You are the triage nurse in a busy emergency clinic. Which of the following four patients should be evaluated by a veterinarian first?

A 2-year-old cat with a minor skin laceration on its flank, still bright and alert.
A 4-year-old dog who is weight-bearing lame on its right hind limb after playing fetch.
A 10-year-old Great Dane with a distended abdomen, who is pacing and retching non-productively. (Correct answer)
A 6-month-old puppy with a 12-hour history of vomiting but is currently quiet and resting.

Correct answer: A 10-year-old Great Dane with a distended abdomen, who is pacing and retching non-productively.

The Great Dane is presenting with classic signs of Gastric Dilatation-Volvulus (GDV), a life-threatening emergency that causes obstructive shock and can lead to death within hours. This condition requires immediate stabilization and surgical intervention, making it the highest priority among the choices. The other patients, while needing care, are in more stable conditions.

Question 3: Brucella canis infection in dogs is most commonly transmitted via which route?

Respiratory aerosols
Contaminated food and water
Vaginal discharges, aborted materials, and semen (Correct answer)
Insect vectors

Correct answer: Vaginal discharges, aborted materials, and semen

Brucella canis is primarily transmitted through contact with vaginal discharges, aborted fetuses, and infected semen, making breeding and whelping high-risk events.

Question 4: Which condition in sows is characterized by postpartum inflammation leading to the triad of mastitis, metritis, and agalactia?

Cystic endometrial hyperplasia
Pyometra
Retained fetal membranes
Mastitis-Metritis-Agalactia (MMA) syndrome (Correct answer)

Correct answer: Mastitis-Metritis-Agalactia (MMA) syndrome

MMA syndrome (also called postpartum dysgalactia syndrome) affects sows shortly after farrowing and causes systemic illness, uterine inflammation, and failure of milk let-down.

Question 5: What is the primary reason for avoiding the use of fluoroquinolone antibiotics (e.g., enrofloxacin) in young, growing puppies?

Potential to induce Fanconi syndrome, a renal tubular defect
Association with the development of aplastic anemia
Risk of causing permanent yellow discoloration of the teeth
Adverse effects on the development of articular cartilage (Correct answer)

Correct answer: Adverse effects on the development of articular cartilage

Fluoroquinolone antibiotics have been shown to cause damage to developing articular cartilage (arthropathy) in young, growing animals, particularly dogs. This can lead to erosions in the cartilage of weight-bearing joints. For this reason, their use is contraindicated in puppies, especially of large and giant breeds.

Question 6: On a thoracic radiograph of a cat, you identify an enlarged, 'valentine-shaped' heart on the dorsoventral (DV) view. This finding is most suggestive of which condition?

Hypertrophic cardiomyopathy (HCM) (Correct answer)
Dilated cardiomyopathy (DCM)
Pericardial effusion
Right-to-left shunting patent ductus arteriosus

Correct answer: Hypertrophic cardiomyopathy (HCM)

The classic 'valentine' shape of the feline heart on a DV or VD radiograph is caused by severe bi-atrial enlargement, which is a common finding in cats with hypertrophic cardiomyopathy (HCM). The prominent atria form the rounded lobes of the 'valentine'.

Question 7: A 12-year-old Domestic Shorthair cat is presented with a 3-month history of progressive weight loss despite a ravenous appetite. The owner also reports increased vocalization and occasional vomiting. On physical exam, you note a heart rate of 240 bpm and a palpable nodule in the cervical region. What is the most likely diagnosis?

Hyperthyroidism (Correct answer)
Diabetes mellitus
Inflammatory bowel disease
Chronic kidney disease

Correct answer: Hyperthyroidism

The combination of weight loss with polyphagia, hyperactivity/vocalization, tachycardia, and a palpable thyroid nodule are classic clinical signs for feline hyperthyroidism. While diabetes mellitus can cause weight loss and polyphagia, it is typically associated with polyuria and polydipsia. Chronic kidney disease and inflammatory bowel disease usually present with weight loss and anorexia or variable appetite, not a ravenous one.

Question 8: A large-breed dog presents with signs highly suggestive of Gastric Dilatation-Volvulus (GDV). Which of the following interventions is the most critical and immediate component of stabilization?

Administering broad-spectrum antibiotics intravenously.
Placing two large-bore intravenous catheters and starting aggressive fluid resuscitation. (Correct answer)
Performing an electrocardiogram (ECG) to check for arrhythmias.
Obtaining right lateral abdominal radiographs to confirm the diagnosis.

Correct answer: Placing two large-bore intravenous catheters and starting aggressive fluid resuscitation.

GDV causes severe obstructive shock due to compression of the caudal vena cava and portal vein. The most critical first step in stabilization is to treat this shock with aggressive intravenous fluid therapy, typically through two large-bore cephalic catheters. While gastric decompression, radiography, and ECG are all important, restoring circulating volume to vital organs is the highest priority to prevent cardiovascular collapse.

Question 9: During a dental procedure on a 4 kg cat, a continuous rate infusion of lidocaine is administered. The technician performing the monitoring suddenly notes muscle tremors, salivation, and vomiting. These are most likely clinical signs of:

An allergic reaction to the dental cleaning paste.
Hypoglycemia due to prolonged anorexia.
Local anesthetic toxicity. (Correct answer)
A normal response to the anesthetic plane being too light.

Correct answer: Local anesthetic toxicity.

Cats are particularly sensitive to the toxic effects of local anesthetics like lidocaine. The clinical signs of toxicity primarily involve the central nervous system (CNS) and can progress from initial signs like muscle tremors, twitching, and salivation to more severe signs like seizures, coma, and respiratory arrest. Vomiting is also a potential sign.

Question 10: A veterinarian is planning to use gabapentin as part of a multi-modal analgesic plan for a dog with chronic neuropathic pain. What is the primary mechanism of action for gabapentin's analgesic effect?

It binds to a subunit of voltage-gated calcium channels, reducing the release of excitatory neurotransmitters. (Correct answer)
It is a potent mu-opioid receptor agonist, similar to morphine.
It acts as a direct agonist at GABA receptors, increasing inhibitory neurotransmission.
It non-selectively inhibits both COX-1 and COX-2 enzymes, reducing prostaglandin synthesis.

Correct answer: It binds to a subunit of voltage-gated calcium channels, reducing the release of excitatory neurotransmitters.

Although structurally similar to the neurotransmitter GABA, gabapentin does not bind to GABA receptors or influence GABA metabolism. Its primary analgesic effect is achieved by binding to the alpha-2-delta subunit of presynaptic voltage-gated calcium channels in the central nervous system. This action inhibits the influx of calcium, which in turn decreases the release of excitatory neurotransmitters like glutamate and substance P that are involved in pain signal transmission.

Question 11: Which zoonotic disease risk to veterinary staff is directly mitigated by pre-exposure rabies vaccination?

Airborne transmission in veterinary hospitals
Exposure to potentially rabid wildlife or unvaccinated animals during clinical care (Correct answer)
Transmission from routine examination of healthy pets
Contamination from urine of infected dogs

Correct answer: Exposure to potentially rabid wildlife or unvaccinated animals during clinical care

Pre-exposure rabies vaccination is recommended for veterinary personnel because of occupational exposure risk when handling potentially rabid animals.

Question 12: A 6-year-old English Bulldog is scheduled for a soft palate resection. Which of the following is the most critical consideration during the anesthetic management of this patient?

Positioning the patient in dorsal recumbency immediately after extubation to facilitate monitoring.
Administering a high dose of a long-acting sedative for premedication to ensure profound sedation.
Selecting an anesthetic protocol that primarily relies on injectable agents for maintenance to avoid airway irritation.
Prioritizing pre-oxygenation before induction and ensuring rapid control of the airway via endotracheal intubation. (Correct answer)

Correct answer: Prioritizing pre-oxygenation before induction and ensuring rapid control of the airway via endotracheal intubation.

Brachycephalic breeds, like English Bulldogs, have compromised airways (stenotic nares, elongated soft palate), making induction and recovery the most dangerous periods of anesthesia. Pre-oxygenation increases the body's oxygen reserves, providing a crucial safety margin during the induction period when the patient may become apneic. Securing the airway quickly with an endotracheal tube is paramount to maintain a patent airway and ensure adequate ventilation and oxygenation.

Question 13: During anesthesia, the capnograph for a 6-year-old canine patient shows an end-tidal CO2 (ETCO2) reading consistently between 55-60 mmHg. The waveform is normal in shape, but the baseline is not returning to zero. Which of the following is the most likely cause?

Malfunctioning one-way valve or exhausted CO2 absorbent. (Correct answer)
Hyperventilation due to a light plane of anesthesia.
Esophageal intubation.
Hypotension caused by the anesthetic agent.

Correct answer: Malfunctioning one-way valve or exhausted CO2 absorbent.

When the capnograph baseline does not return to zero, it indicates the patient is rebreathing carbon dioxide. Common causes for this in a rebreathing circuit include exhausted or saturated soda lime (CO2 absorbent) or a malfunctioning one-way (inspiratory or expiratory) valve. Hyperventilation would cause a low ETCO2, while esophageal intubation would result in a near-zero reading.

Question 14: What is the most common cause of pyometra in dogs?

Sttphlococcus
Escherichia coli (Correct answer)
Salmonella
Streptococcus

Correct answer: Escherichia coli

Pyometra is a serious bacterial infection of the uterus, most commonly seen in intact female dogs. Escherichia coli (E. coli) is the most frequent bacterial isolate found in cases of pyometra, often ascending from the vagina. The hormonal changes during the estrous cycle, particularly progesterone, create an environment conducive to bacterial growth, leading to this life-threatening condition.

Question 15: A 7-year-old cat is presented in severe respiratory distress, exhibiting open-mouth breathing, a neck-extended posture, and cyanosis. The cat is extremely stressed. Which of the following is the most appropriate first action?

Perform a detailed oral examination to check for foreign bodies.
Provide supplemental oxygen in a calm, minimally stressful manner (e.g., in an oxygen cage or via flow-by) and administer a light sedative if needed. (Correct answer)
Immediately take thoracic radiographs to diagnose the cause.
Place an intravenous catheter and draw blood for a complete blood count and chemistry panel.

Correct answer: Provide supplemental oxygen in a calm, minimally stressful manner (e.g., in an oxygen cage or via flow-by) and administer a light sedative if needed.

In a patient with severe respiratory distress, especially a cat, minimizing stress is paramount as it can lead to decompensation and death. The first and most critical step is to provide oxygen supplementation with minimal handling. Stressful procedures like radiography or venipuncture should be delayed until the patient is more stable.

Question 16: What is the primary licensing examination for veterinarians in North America?

NAVLE (Correct answer)
VIVA
RACE
VTNE

Correct answer: NAVLE

The North American Veterinary Licensing Examination (NAVLE) is the standard examination required for licensure to practice veterinary medicine in all licensing jurisdictions in the United States and Canada. It assesses a candidate's competency to practice veterinary medicine, ensuring they meet a baseline standard of knowledge and skills. Passing the NAVLE is a critical step for all aspiring veterinarians in North America.

Question 17: Which complete blood count (CBC) finding is most consistent with a regenerative anemia in a dog?

Decreased MCHC with no reticulocytosis
Increased reticulocyte count with polychromasia (Correct answer)
Decreased MCV with normal reticulocytes
Increased WBC with left shift

Correct answer: Increased reticulocyte count with polychromasia

Regenerative anemia is characterized by an elevated reticulocyte count and polychromasia on blood smear, indicating active bone marrow response.

Question 18: A 6-year-old male neutered Border Collie is presented with acute onset of seizures, ataxia, and apparent blindness. The owner reports the dog may have ingested a medication from the barn used to deworm sheep. Which of the following drugs is the most likely cause of these clinical signs?

Ivermectin (Correct answer)
Praziquantel
Fenbendazole
Pyrantel pamoate

Correct answer: Ivermectin

Ivermectin toxicity is common in herding breeds, like Border Collies, that have a mutation in the MDR1 (multi-drug resistance 1) gene. This mutation allows ivermectin to cross the blood-brain barrier, leading to severe neurologic signs such as seizures, ataxia, and blindness. The other listed dewormers have a much wider margin of safety and do not typically cause neurotoxicity at standard doses.

Question 19: A horse is being treated with gentamicin, an aminoglycoside antibiotic, for a severe bacterial infection. Which of the following potential toxicities is the most significant concern with this class of drug and requires therapeutic monitoring?

Hepatotoxicity
Nephrotoxicity (Correct answer)
Cardiotoxicity
Neurotoxicity

Correct answer: Nephrotoxicity

The primary adverse effect of aminoglycoside antibiotics, such as gentamicin and amikacin, is nephrotoxicity (kidney damage). Ototoxicity (damage to the ear) is also a concern. Monitoring renal function through bloodwork (BUN, creatinine) is crucial during therapy to prevent irreversible kidney damage.

Question 20: Which serum hormone level is most commonly monitored to determine the optimal breeding time in bitches?

Progesterone (Correct answer)
LH
FSH
Estrogen

Correct answer: Progesterone

Serial progesterone assays are used to time breeding in dogs because progesterone begins rising at the LH surge and ovulation occurs at approximately 4–8 ng/mL.

Question 21: Which of the following statements most accurately describes the clinical use of tramadol for analgesia in dogs versus cats?

Dogs metabolize tramadol more effectively into its active metabolite (M1), resulting in superior analgesia compared to cats.
Tramadol is a more reliable oral analgesic in cats because they produce higher levels of the active metabolite (O-desmethyltramadol) compared to dogs. (Correct answer)
The primary analgesic effect in both species is from serotonin and norepinephrine reuptake inhibition, with the opioid effect being negligible.
Both species metabolize tramadol to an inactive metabolite, making it ineffective in both dogs and cats.

Correct answer: Tramadol is a more reliable oral analgesic in cats because they produce higher levels of the active metabolite (O-desmethyltramadol) compared to dogs.

The analgesic efficacy of tramadol relies heavily on its metabolism to O-desmethyltramadol (M1), which has a much higher affinity for mu-opioid receptors. Cats metabolize tramadol effectively, producing significant amounts of the active M1 metabolite, which contributes to its analgesic effect. Dogs, in contrast, produce very little M1 and primarily produce the inactive N-desmethyl tramadol metabolite, making the opioid effect of tramadol questionable and less reliable in this species.

Question 22: A veterinarian administers dexmedetomidine to a healthy adult horse for sedation prior to a standing procedure. Which of the following sets of physiological effects is most expected?

Normal heart rate, hypertension, and increased insulin release.
Bradycardia, initial hypertension followed by potential hypotension, and decreased GI motility. (Correct answer)
Tachycardia, hypertension, and bronchodilation.
Tachycardia, hypotension, and increased salivation.

Correct answer: Bradycardia, initial hypertension followed by potential hypotension, and decreased GI motility.

Alpha-2 agonists like dexmedetomidine cause peripheral vasoconstriction, leading to an initial hypertension, which triggers a reflex bradycardia. As the drug's central effects take hold, cardiac output can decrease, potentially leading to hypotension. These drugs are also well-known for significantly reducing gastrointestinal motility and secretions. They inhibit insulin release, which can cause hyperglycemia, and inhibit antidiuretic hormone (ADH), causing diuresis.

Question 23: A 4-year-old dog is presented for acute lethargy, vomiting, and ataxia. The owner suspects the dog may have licked up a puddle of antifreeze in the garage 12 hours ago. Which microscopic finding in the urine sediment would be most supportive of a diagnosis of ethylene glycol toxicity?

Calcium oxalate monohydrate crystals (Correct answer)
Ammonium biurate crystals
Calcium oxalate dihydrate crystals
Struvite crystals

Correct answer: Calcium oxalate monohydrate crystals

Ethylene glycol is metabolized to oxalic acid, which then binds with calcium to form calcium oxalate crystals that precipitate in the renal tubules, causing acute kidney injury. The picket-fence or dumbbell-shaped calcium oxalate monohydrate crystals are considered the most characteristic finding for this toxicity. While dihydrate crystals can be seen, monohydrate crystals are more specific.

Question 24: Which finding on a liver biopsy cytology is pathognomonic for hepatic lipidosis in cats?

Widespread hepatocyte vacuolation with lipid droplets (Correct answer)
Diffuse lymphocytic infiltration
Necrotic hepatocytes with neutrophil infiltrates
Biliary hyperplasia with fibrosis

Correct answer: Widespread hepatocyte vacuolation with lipid droplets

Feline hepatic lipidosis is characterized by massive cytoplasmic lipid vacuolation of hepatocytes, visible on fine needle aspirate cytology.

Question 25: What are the standard minimum time, temperature, and pressure settings for sterilizing a routine surgical instrument pack in a gravity displacement autoclave?

15 minutes at 121°C (250°F) and 15 psi (Correct answer)
3 minutes at 132°C (270°F) and 30 psi
20 minutes at 100°C (212°F) and 5 psi
10 minutes at 115°C (240°F) and 10 psi

Correct answer: 15 minutes at 121°C (250°F) and 15 psi

The generally accepted standard for routine sterilization of surgical packs in a gravity displacement steam sterilizer is an exposure time of 13-15 minutes at a temperature of 121°C (250°F) and a pressure of 15 psi. The 3-minute cycle at 132°C is typically used for flash sterilization of unwrapped instruments, not routine packs.

Question 26: Which coagulation test specifically evaluates the extrinsic and common pathways?

Activated clotting time (ACT)
Activated partial thromboplastin time (aPTT)
Prothrombin time (PT) (Correct answer)
Platelet count

Correct answer: Prothrombin time (PT)

PT measures the time for clot formation via the extrinsic pathway (factor VII) and common pathway (factors X, V, II, I).

Question 27: Which program ensures that continuing education courses for veterinarians meet high standards?

RACE (Correct answer)
VIVA
NAVLE
VAULT

Correct answer: RACE

The Registry of Approved Continuing Education (RACE) program is specifically designed to ensure that continuing education courses for veterinarians and veterinary technicians meet high standards of quality and educational value. RACE reviews and approves courses, providing a reliable benchmark for regulatory boards and licensees. This program helps maintain professional competency and supports lifelong learning within the veterinary field.

Question 28: A veterinarian is evaluating imaging for a dog with acute, severe neck pain and tetraparesis. To best evaluate the spinal cord for compression from a suspected intervertebral disc extrusion, which imaging modality is considered the gold standard?

Myelography
Magnetic Resonance Imaging (MRI) (Correct answer)
Survey Radiography
Computed Tomography (CT)

Correct answer: Magnetic Resonance Imaging (MRI)

MRI is the gold standard for imaging soft tissues like the spinal cord and intervertebral discs. It provides superior contrast resolution, allowing for detailed visualization of the spinal cord, nerve roots, and the extruded disc material without the use of ionizing radiation or intrathecal contrast.

Question 29: A horse has a CSF tap showing xanthochromic fluid with elevated protein. What does xanthochromia indicate?

Fungal meningitis
Normal CSF in neonatal foals
Previous hemorrhage with hemoglobin breakdown products (Correct answer)
Active bacterial infection

Correct answer: Previous hemorrhage with hemoglobin breakdown products

Xanthochromia (yellow discoloration) of CSF results from bilirubin produced by breakdown of red blood cells from a prior hemorrhage.

Veterinary Technician National Examination (VTNE)

The VTNE is the national licensing exam administered by AAVSB that tests veterinary technicians across 9 clinical domains including animal care, anesthesia, pharmacology, surgical nursing, and laboratory procedures. Passing is required for licensure as a registered/certified veterinary technician in most US states and Canadian provinces.

Questions

35 min

Time Limit

70%

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