Fundamentals of Critical Care Support (FCCS) — Questions and Answers

Question 1: Which isolation precaution is required for a patient with suspected pulmonary tuberculosis?

Airborne precautions with negative pressure room (Correct answer)
Contact precautions
Droplet precautions
Standard precautions only

Correct answer: Airborne precautions with negative pressure room

Pulmonary TB is transmitted via airborne droplet nuclei < 5 µm requiring airborne precautions: N95 respirator and negative pressure isolation room.

Question 2: Electrical alternans on ECG is most associated with which diagnosis?

Cardiac tamponade (Correct answer)
Hypokalemia
Hypertrophic cardiomyopathy
Brugada syndrome

Correct answer: Cardiac tamponade

Electrical alternans (beat-to-beat alternation of QRS axis/amplitude) results from the heart swinging within a large pericardial effusion, indicating tamponade.

Question 3: When performing a medication high-alert check before administering IV heparin, the nurse should verify:

That the patient has signed a consent form
That a blood culture has been drawn
That the patient has eaten within 2 hours
Weight-based dosing, correct concentration, and an independent double-check by a second nurse (Correct answer)

Correct answer: Weight-based dosing, correct concentration, and an independent double-check by a second nurse

Heparin is a high-alert medication requiring weight-based dosing verification, concentration confirmation, and an independent double-check to prevent dosing errors and hemorrhage.

Question 4: Which of the following is the primary goal when managing a patient with respiratory failure?

Ensure adequate oxygenation and ventilation (Correct answer)
Maintain blood pressure
Reduce fluid overload
Decrease oxygen consumption

Correct answer: Ensure adequate oxygenation and ventilation

The primary goal when managing a patient with respiratory failure is to ensure adequate oxygenation and ventilation. Respiratory failure means the lungs cannot effectively exchange gases, leading to insufficient oxygen delivery and/or inadequate carbon dioxide removal. Interventions are focused on restoring these vital functions to prevent organ damage and maintain life.

Question 5: Status epilepticus is defined as continuous seizure activity lasting longer than how many minutes?

5 minutes (Correct answer)
10 minutes
2 minutes
30 minutes

Correct answer: 5 minutes

Status epilepticus is defined as seizure activity lasting ≥ 5 minutes or two or more seizures without return to baseline consciousness, requiring urgent treatment.

Question 6: Which hemodynamic pattern is classic for cardiogenic shock?

High CO, low SVR, low PCWP
Low CO, high SVR, high PCWP (Correct answer)
High CO, high SVR, low PCWP
Low CO, low SVR, low PCWP

Correct answer: Low CO, high SVR, high PCWP

Cardiogenic shock is characterized by low cardiac output, compensatory high systemic vascular resistance, and elevated pulmonary capillary wedge pressure reflecting fluid backup.

Question 7: The first-line vasopressor for septic shock per Surviving Sepsis Guidelines is:

Dopamine
Epinephrine
Vasopressin
Norepinephrine (Correct answer)

Correct answer: Norepinephrine

Norepinephrine is recommended as the first-choice vasopressor for septic shock due to its superior vasoconstrictive effect and favorable safety profile.

Question 8: What is the recommended CPR compression-to-ventilation ratio for adults with an advanced airway in place?

15:2
30:2
Continuous compressions at 100–120/min with 1 breath every 6 seconds (Correct answer)
50:1

Correct answer: Continuous compressions at 100–120/min with 1 breath every 6 seconds

Once an advanced airway is secured, continuous chest compressions at 100–120/min are given while ventilations are delivered asynchronously at 1 breath every 6 seconds.

Question 9: What is the maximum recommended rate of sodium correction in chronic hyponatremia to prevent osmotic demyelination syndrome?

15–20 mEq/L per 24 hours
25 mEq/L per 24 hours
8–10 mEq/L per 24 hours (Correct answer)
1–2 mEq/L per hour

Correct answer: 8–10 mEq/L per 24 hours

Correcting chronic hyponatremia faster than 8–10 mEq/L per 24 hours risks osmotic demyelination (central pontine myelinolysis), a devastating neurological complication.

Question 10: Sepsis-3 defines sepsis as life-threatening organ dysfunction caused by a dysregulated host response to infection, identified clinically by a SOFA score change of how many points?

≥ 2 points (Correct answer)
≥ 4 points
≥ 3 points
≥ 1 point

Correct answer: ≥ 2 points

Sepsis-3 criteria use an acute SOFA score increase of ≥ 2 points to identify organ dysfunction associated with infection.

Question 11: Decorticate posturing indicates injury at which level of the nervous system?

Peripheral nerve level
Brainstem below the pons
Spinal cord at C4
Above the midbrain (hemispheric/internal capsule) (Correct answer)

Correct answer: Above the midbrain (hemispheric/internal capsule)

Decorticate posturing (arm flexion, leg extension) reflects disruption of corticospinal tracts above the midbrain, releasing primitive brainstem reflexes.

Question 12: A critically ill patient develops carpopedal spasm and a positive Chvostek's sign. Which electrolyte abnormality is most likely?

Hyperkalemia
Hyponatremia
Hypophosphatemia
Hypocalcemia (Correct answer)

Correct answer: Hypocalcemia

Hypocalcemia causes neuromuscular excitability, manifesting as carpopedal spasm, Chvostek's sign (facial nerve tapping), and Trousseau's sign.

Question 13: Which parameters can be directly measured using a central venous catheter?

Cardiac output
Mixed venous oxygen saturation (SvO2) (Correct answer)
Pulmonary artery pressure
Central venous pressure (CVP) (Correct answer)

Correct answer: Mixed venous oxygen saturation (SvO2)

A central venous catheter (CVC) allows for the direct measurement of central venous pressure (CVP). CVP reflects the pressure in the right atrium and provides an estimate of right ventricular preload and overall fluid status. While specialized CVCs can measure other parameters, CVP is a fundamental direct measurement obtained from any standard central line.

Question 14: Refeeding syndrome in a malnourished ICU patient is primarily characterized by a dangerous drop in which electrolyte?

Sodium
Chloride
Phosphate (Correct answer)
Potassium

Correct answer: Phosphate

Refeeding syndrome causes severe hypophosphatemia as insulin release during refeeding drives phosphate rapidly into cells, leading to cardiac, respiratory, and neurological complications.

Question 15: Which clinical finding most strongly suggests fluid overload in a mechanically ventilated ICU patient?

Rising CVP with worsening hypoxemia and bilateral pulmonary infiltrates (Correct answer)
Urine output of 1.5 mL/kg/hr
Serum lactate decreasing from 4 to 2 mmol/L
Heart rate decreasing from 110 to 90 bpm

Correct answer: Rising CVP with worsening hypoxemia and bilateral pulmonary infiltrates

Rising filling pressures combined with worsening oxygenation and pulmonary infiltrates indicate fluid overload causing pulmonary edema in the ICU.

Question 16: Which international patient safety goal addresses the risk of wrong-site, wrong-patient procedures in the ICU?

Daily goal sheet completion
Improving hand hygiene compliance
Universal protocol: patient identification, site marking, and time-out before procedures (Correct answer)
Rapid response team activation

Correct answer: Universal protocol: patient identification, site marking, and time-out before procedures

The Universal Protocol (patient ID verification, surgical/procedural site marking, and pre-procedure time-out) prevents wrong-patient and wrong-site procedural errors.

Question 17: What does an increasing PaCO2 with rising respiratory rate in a ventilated patient suggest?

Metabolic alkalosis compensation
Successful weaning readiness
Increasing dead space ventilation or worsening respiratory failure (Correct answer)
Improving lung compliance

Correct answer: Increasing dead space ventilation or worsening respiratory failure

Rising PaCO2 despite increased respiratory effort indicates worsening dead space or underlying deterioration that ventilation cannot compensate.

Question 18: In acute decompensated heart failure, what is the primary goal of IV nitroglycerin?

Increase cardiac output directly
Increase heart rate
Reduce preload and afterload to decrease pulmonary congestion (Correct answer)
Improve coronary perfusion only

Correct answer: Reduce preload and afterload to decrease pulmonary congestion

Nitroglycerin dilates venous and arterial beds, reducing both preload and afterload and rapidly relieving pulmonary congestion in acute heart failure.

Question 19: What is the normal plateau pressure target in mechanically ventilated ARDS patients?

Less than 20 cmH2O
Less than 30 cmH2O (Correct answer)
Less than 50 cmH2O
Less than 40 cmH2O

Correct answer: Less than 30 cmH2O

Plateau pressure should be kept below 30 cmH2O to reduce the risk of barotrauma in ARDS patients.

Question 20: Which electrolyte is the primary determinant of extracellular fluid volume and intravascular volume?

Potassium
Chloride
Sodium (Correct answer)
Bicarbonate

Correct answer: Sodium

Sodium is the principal extracellular cation and the primary osmole that determines extracellular fluid volume.

Question 21: Which antibiotic combination provides both gram-negative and MRSA coverage for empiric septic shock therapy?

Azithromycin + ceftriaxone
Amoxicillin + metronidazole
Vancomycin + piperacillin-tazobactam or meropenem (Correct answer)
Ciprofloxacin + clindamycin

Correct answer: Vancomycin + piperacillin-tazobactam or meropenem

Vancomycin covers MRSA and gram-positive organisms, while piperacillin-tazobactam or meropenem covers broad gram-negative pathogens including Pseudomonas.

Question 22: Which of the following is a common complication of central venous catheter insertion?

Stroke
Hemothorax (Correct answer)
Pneumonia
Renal failure

Correct answer: Hemothorax

Hemothorax is a common and serious complication of central venous catheter insertion, particularly when accessing the subclavian or internal jugular veins. Accidental puncture of the pleura or lung during the procedure can lead to blood accumulating in the pleural space. This requires prompt recognition and management to prevent respiratory compromise.

Question 23: Broad-spectrum antibiotics in sepsis should ideally be de-escalated based on culture data within how many hours?

No de-escalation needed if clinical improvement
24–48 hours
7 days
72–96 hours (Correct answer)

Correct answer: 72–96 hours

De-escalation to narrower-spectrum antibiotics based on culture and sensitivity data within 72–96 hours is recommended to reduce resistance and adverse effects.

Question 24: Which medication should be avoided in right ventricular infarction with hypotension?

Oxygen
Nitroglycerin (preload reducers) (Correct answer)
Heparin
Aspirin

Correct answer: Nitroglycerin (preload reducers)

RV infarction depends on adequate preload; nitroglycerin reduces venous return, worsening hypotension in this setting.

Question 25: Which electrolyte deficiency must be corrected before refractory hypokalemia can be successfully treated?

Magnesium (Correct answer)
Calcium
Phosphate
Sodium

Correct answer: Magnesium

Hypomagnesemia impairs renal potassium conservation and cellular potassium uptake, making hypokalemia refractory to replacement until magnesium is corrected.

Question 26: Source control in sepsis refers to:

Prescribing broad-spectrum antibiotics
Reducing fever with antipyretics
Isolating the patient in negative pressure room
Physically removing or draining the infectious focus (e.g., abscess drainage) (Correct answer)

Correct answer: Physically removing or draining the infectious focus (e.g., abscess drainage)

Source control involves definitive measures to eliminate the infection source — debridement, drainage, or removal of infected devices — and is a critical Surviving Sepsis recommendation.

Question 27: Pulse oximetry (SpO2) can be falsely HIGH in which condition?

Severe anemia
Hypotension
Hypothermia
Carbon monoxide poisoning (Correct answer)

Correct answer: Carbon monoxide poisoning

Carboxyhemoglobin absorbs light at the same wavelength as oxyhemoglobin, causing the pulse oximeter to read falsely normal or high despite severe CO poisoning.

Question 28: What tidal volume is recommended for lung-protective ventilation in ARDS patients?

10-12 mL/kg predicted body weight
14 mL/kg predicted body weight
6 mL/kg predicted body weight (Correct answer)
8 mL/kg predicted body weight

Correct answer: 6 mL/kg predicted body weight

Lung-protective ventilation in ARDS uses 6 mL/kg predicted body weight to minimize ventilator-induced lung injury.

Question 29: Which intervention is considered first-line for non-pharmacologic delirium prevention in the ICU?

Benzodiazepine reduction only
Prophylactic haloperidol
Early mobilization, sleep hygiene, and reorientation (ABCDEF bundle) (Correct answer)
Continuous sedation

Correct answer: Early mobilization, sleep hygiene, and reorientation (ABCDEF bundle)

The ABCDEF bundle (Assess, Both SAT/SBT, Choice of analgesia/sedation, Delirium, Early mobility, Family) is the evidence-based framework for delirium prevention.

Question 30: The FOUR Score assesses which neurological domains?

Eyes, verbal, motor, breathing
Eyes, motor, brainstem reflexes, respiration (Correct answer)
Orientation, memory, attention, language
Cognition, reflex, motor, sensory

Correct answer: Eyes, motor, brainstem reflexes, respiration

The FOUR Score (Full Outline of UnResponsiveness) evaluates eye responses, motor responses, brainstem reflexes, and respiratory pattern, providing more detail than GCS.

Question 31: A MAP of less than what value generally requires vasopressor initiation in septic shock?

70 mmHg
55 mmHg
60 mmHg
65 mmHg (Correct answer)

Correct answer: 65 mmHg

The Surviving Sepsis Campaign recommends targeting a mean arterial pressure of at least 65 mmHg, initiating vasopressors when MAP falls below this threshold.

Question 32: A patient with decompensated heart failure and hyponatremia (Na = 128 mEq/L) presents to the ICU. What is the most appropriate initial fluid management?

Administer 3% hypertonic saline rapidly
Give albumin infusion to expand intravascular volume
Restrict free water intake and consider diuretics (Correct answer)
Administer 2 L normal saline bolus

Correct answer: Restrict free water intake and consider diuretics

Dilutional hyponatremia in heart failure is treated with free water restriction and diuresis; adding more fluid worsens volume overload without correcting sodium.

Question 33: Which sedation scale is most commonly used to assess depth of sedation in ICU patients?

Wong-Baker FACES Scale
Ramsay Scale (original version)
Richmond Agitation-Sedation Scale (RASS) (Correct answer)
Numeric Rating Scale (NRS)

Correct answer: Richmond Agitation-Sedation Scale (RASS)

The RASS is the most validated and widely used tool for assessing sedation depth in mechanically ventilated ICU patients, ranging from -5 (unarousable) to +4 (combative).

Question 34: In the management of septic shock, which of the following is the first-line vasopressor recommended for use?

Epinephrine
Norepinephrine (Correct answer)
Dopamine
Phenylephrine

Correct answer: Norepinephrine

Norepinephrine is the first-line vasopressor recommended for use in the management of septic shock. It is preferred due to its potent alpha-1 adrenergic effects, which cause vasoconstriction and effectively increase mean arterial pressure, crucial for maintaining organ perfusion. Major guidelines, such as the Surviving Sepsis Campaign, endorse its use due to its efficacy and favorable side effect profile.

Question 35: What is the recommended blood culture timing relative to antibiotic administration in septic shock?

Cultures should be drawn 24 hours after antibiotics
Cultures must be drawn 1 hour after antibiotics
Cultures are not needed before antibiotics
Cultures drawn before antibiotics if possible, but antibiotics should NOT be delayed > 1 hour (Correct answer)

Correct answer: Cultures drawn before antibiotics if possible, but antibiotics should NOT be delayed > 1 hour

Blood cultures should be obtained before antibiotics when possible, but initiating antibiotics within 1 hour of septic shock recognition takes priority over culture timing.

Question 36: Immune checkpoint inhibitor-related pneumonitis in the ICU is best treated with:

Antifungal therapy
Bronchodilators alone
Broad-spectrum antibiotics
High-dose corticosteroids after ruling out infection (Correct answer)

Correct answer: High-dose corticosteroids after ruling out infection

Immunotherapy-related pneumonitis is an immune-mediated adverse effect treated with high-dose steroids (1–2 mg/kg prednisone equivalent) after excluding infectious causes.

Question 37: What is the normal serum sodium concentration range?

120–130 mEq/L
125–135 mEq/L
135–145 mEq/L (Correct answer)
145–155 mEq/L

Correct answer: 135–145 mEq/L

Normal serum sodium ranges from 135 to 145 mEq/L; values outside this range indicate hypo- or hypernatremia.

Question 38: What is the recommended frequency of endotracheal tube cuff pressure checks in ventilated patients?

Once per week
Every 2 hours
Once after intubation only
Every shift (every 8–12 hours) (Correct answer)

Correct answer: Every shift (every 8–12 hours)

Cuff pressure should be checked and maintained at 20–30 cmH2O every 8–12 hours to prevent microaspiration above the cuff and tracheal injury below it.

Question 39: Early enteral nutrition in ICU patients should ideally be started within how many hours of ICU admission?

72–96 hours
48–72 hours
6–12 hours
24–48 hours (Correct answer)

Correct answer: 24–48 hours

SCCM/ASPEN guidelines recommend initiating enteral nutrition within 24–48 hours of ICU admission in hemodynamically stable patients to preserve gut integrity.

Question 40: In ICU patients, which daily safety check is recommended for patients on mechanical ventilation per the VAP bundle?

Chest X-ray every morning
Parenteral nutrition order renewal
Sedation interruption (daily awakening trial) (Correct answer)
Routine antibiotic dosing review

Correct answer: Sedation interruption (daily awakening trial)

Daily sedation interruption (daily awakening trial) is a core VAP bundle element that reduces ventilator days, ICU stays, and associated infections.

Question 41: Which intervention is indicated for hemodynamically unstable SVT unresponsive to adenosine?

Synchronized cardioversion (Correct answer)
Digoxin loading
Oral beta-blocker
IV amiodarone infusion

Correct answer: Synchronized cardioversion

Synchronized cardioversion is the immediate treatment for hemodynamically unstable SVT when pharmacologic therapy fails.

Question 42: A lactate level > 4 mmol/L in a suspected infection patient meets criteria for which condition regardless of blood pressure?

Bacteremia
SIRS only
Severe sepsis (old terminology)
Septic shock (Sepsis-3 criteria) (Correct answer)

Correct answer: Septic shock (Sepsis-3 criteria)

Sepsis-3 defines septic shock as sepsis plus either vasopressor requirement to maintain MAP ≥ 65 or lactate > 2 mmol/L; lactate > 4 mmol/L alone strongly indicates high mortality risk equivalent to shock.

Question 43: Dobutamine is preferred over norepinephrine in which hemodynamic state?

Cardiogenic shock with low cardiac output and adequate blood pressure (Correct answer)
Neurogenic shock
Hemorrhagic shock
Septic shock with high cardiac output

Correct answer: Cardiogenic shock with low cardiac output and adequate blood pressure

Dobutamine's positive inotropic effect makes it the agent of choice when pump failure (low CO) is the primary problem with a relatively preserved MAP.

Question 44: Which criterion distinguishes septic shock from sepsis in Sepsis-3 definitions?

White count > 12,000
Vasopressor requirement to maintain MAP ≥ 65 plus lactate > 2 mmol/L despite adequate resuscitation (Correct answer)
Temperature > 38.5°C
Positive blood cultures

Correct answer: Vasopressor requirement to maintain MAP ≥ 65 plus lactate > 2 mmol/L despite adequate resuscitation

Septic shock is sepsis with persistent circulatory and cellular/metabolic abnormalities requiring vasopressors to achieve MAP ≥ 65 and serum lactate > 2 mmol/L despite fluids.

Question 45: Point-of-care ultrasound (POCUS) in the ICU can rapidly assess which clinical question?

Microorganism identification
Presence of pericardial effusion, pneumothorax, or volume status (Correct answer)
Exact serum electrolyte values
Coagulation cascade function

Correct answer: Presence of pericardial effusion, pneumothorax, or volume status

POCUS enables bedside evaluation of pericardial effusion, pleural effusion, pneumothorax, IVC collapsibility (volume status), and cardiac function.

Question 46: In sepsis with suspected meningitis, the correct order of interventions is:

Antibiotics → wait 4 hours → LP → blood cultures
CT head → LP → blood cultures → antibiotics
Blood cultures → antibiotics + dexamethasone → CT → LP if safe (Correct answer)
LP first → blood cultures → CT → antibiotics

Correct answer: Blood cultures → antibiotics + dexamethasone → CT → LP if safe

Blood cultures are drawn first, then antibiotics and corticosteroids are given immediately without delaying for LP; imaging is obtained to assess LP safety if needed.

Question 47: Narrow complex tachycardia at 150 bpm with a regular rhythm should prompt consideration of which diagnosis?

Ventricular tachycardia
Junctional escape rhythm
Atrial flutter with 2:1 block (Correct answer)
Multifocal atrial tachycardia

Correct answer: Atrial flutter with 2:1 block

Atrial flutter typically produces atrial rates of ~300 bpm; a ventricular rate of 150 bpm with regular rhythm suggests 2:1 AV conduction of flutter waves.

Question 48: Endotracheal tube cuff pressure should be maintained between which values to prevent tracheal injury?

20–30 cmH2O (Correct answer)
35–45 cmH2O
5–10 cmH2O
50–60 cmH2O

Correct answer: 20–30 cmH2O

Cuff pressure of 20–30 cmH2O provides an adequate seal while preventing tracheal mucosal ischemia from excessive pressure.

Question 49: What ECG finding is pathognomonic for ST-elevation myocardial infarction (STEMI)?

Inverted T waves in V1-V4
Diffuse ST depression
ST elevation ≥ 1mm in ≥ 2 contiguous leads (Correct answer)
New left bundle branch block only

Correct answer: ST elevation ≥ 1mm in ≥ 2 contiguous leads

STEMI is diagnosed by ST elevation ≥ 1 mm in at least two contiguous leads representing the same coronary territory.

Question 50: Beck's triad (hypotension, JVD, muffled heart sounds) is classic for which emergency?

Cardiac tamponade (Correct answer)
Massive pulmonary embolism
Acute aortic dissection
Tension pneumothorax

Correct answer: Cardiac tamponade

Beck's triad — hypotension, jugular venous distension, and muffled heart sounds — is the clinical hallmark of cardiac tamponade.

Fundamentals of Critical Care Support (FCCS)

The FCCS course from the Society of Critical Care Medicine trains non-intensivists to manage critically ill patients during the first 24 hours until specialist care is available. A posttest with a 70% passing score is required for course completion and certificate issuance.

Questions

60 min

Time Limit

70%

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