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

Question 1: Which medication should be avoided in right ventricular infarction with hypotension?

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

Correct answer: Nitroglycerin (preload reducers)

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

Question 2: Which ECG change is most characteristic of hypokalemia?

Prolonged PR interval
Wide QRS complex
Peaked T-waves
U-waves and flattened T-waves (Correct answer)

Correct answer: U-waves and flattened T-waves

Hypokalemia classically produces U-waves (positive deflection after T-wave), T-wave flattening, and in severe cases ST depression and prolonged QU interval.

Question 3: Which hemodynamic pattern is classic for cardiogenic shock?

High CO, low SVR, low PCWP
Low CO, high SVR, high PCWP (Correct answer)
Low CO, low SVR, low PCWP
High CO, high 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 4: In acute decompensated heart failure, what is the primary goal of IV nitroglycerin?

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

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

25 mEq/L per 24 hours
8–10 mEq/L per 24 hours (Correct answer)
15–20 mEq/L per 24 hours
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 6: What is the mechanism of action of adenosine in terminating SVT?

Prolongs ventricular action potential
Increases vagal tone chronically
Transiently blocks AV nodal conduction, interrupting reentry circuits (Correct answer)
Blocks calcium channels in ventricular muscle

Correct answer: Transiently blocks AV nodal conduction, interrupting reentry circuits

Adenosine causes transient AV nodal block by activating A1 receptors, interrupting the reentrant circuit responsible for most SVT.

Question 7: 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 8: High-flow nasal cannula (HFNC) therapy can deliver oxygen at flows up to what rate?

60 L/min (Correct answer)
80 L/min
20 L/min
40 L/min

Correct answer: 60 L/min

HFNC can deliver heated, humidified oxygen at flow rates up to 60 L/min, providing FiO2 near 1.0.

Question 9: Beck's triad (hypotension, JVD, muffled heart sounds) is classic for which emergency?

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

Correct answer: Cardiac tamponade

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

Question 10: Dobutamine is preferred over norepinephrine in which hemodynamic state?

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

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 11: Ventilator-associated pneumonia (VAP) prevention bundles include which intervention?

Continuous antibiotic prophylaxis
Prone positioning every 4 hours
Daily sedation vacation and spontaneous breathing trials (Correct answer)
Routine bronchoscopy every 48 hours

Correct answer: Daily sedation vacation and spontaneous breathing trials

Daily sedation interruption and spontaneous breathing trials reduce ventilator days — the primary risk factor for VAP — and are core VAP bundle elements.

Question 12: Which biomarker is most useful for monitoring antibiotic response and guiding de-escalation in sepsis?

White blood cell count
C-reactive protein (CRP)
Lactate
Procalcitonin (PCT) (Correct answer)

Correct answer: Procalcitonin (PCT)

Serial procalcitonin levels fall with effective antibiotic therapy, and PCT-guided de-escalation reduces antibiotic duration without worsening outcomes.

Question 13: The ICU Liberation ABCDEF bundle 'E' component stands for:

Early mobility and exercise (Correct answer)
Empiric antibiotic therapy
Electrolyte management
Extubation readiness

Correct answer: Early mobility and exercise

The 'E' in ABCDEF stands for Early mobility and exercise, which reduces delirium, ICU-acquired weakness, and improves long-term functional outcomes.

Question 14: Which of the following is the most appropriate first step in managing a patient with a suspected airway obstruction?

Administer supplemental oxygen
Use a bag-valve-mask to provide ventilation
Insert an oropharyngeal airway (Correct answer)
Perform a cricothyrotomy

Correct answer: Insert an oropharyngeal airway

In a patient with a suspected airway obstruction, especially if unconscious, the initial step is to open the airway using basic maneuvers. If these are insufficient, inserting an oropharyngeal airway (OPA) is the most appropriate first device-based intervention. It helps maintain an open airway by preventing the tongue from obstructing the pharynx, serving as a crucial bridge to more advanced airway management if needed.

Question 15: A patient with hemorrhagic shock has a blood pressure of 80/50 mmHg and heart rate of 130 bpm. What is the most appropriate initial fluid strategy?

Give 50 mEq sodium bicarbonate IV
Administer 1–2 L balanced crystalloid bolus (Correct answer)
Restrict all fluids until bleeding is controlled
Administer 250 mL D5W bolus

Correct answer: Administer 1–2 L balanced crystalloid bolus

Initial resuscitation in hemorrhagic shock uses 1–2 L of balanced crystalloid (Lactated Ringer's or normal saline) while preparing for blood product administration.

Question 16: What is the target PaCO2 range in a patient with suspected elevated intracranial pressure (ICP)?

25–30 mmHg
35–45 mmHg (Correct answer)
50–55 mmHg
20–25 mmHg

Correct answer: 35–45 mmHg

Normal PaCO2 (35–45 mmHg) is maintained to avoid hypercapnia (vasodilation worsening ICP) without prophylactic hyperventilation which risks ischemia.

Question 17: What is the recommended CPR compression-to-ventilation ratio for adults with an advanced airway in place?

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

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

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

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 19: A patient with polyuria (>300 mL/hr), hypernatremia, and very dilute urine (specific gravity 1.001) in the ICU most likely has which condition?

Primary polydipsia
SIADH
Diabetes insipidus (Correct answer)
Hyperglycemic hyperosmolar state

Correct answer: Diabetes insipidus

Diabetes insipidus causes massive free water loss due to absent or ineffective ADH, resulting in dilute urine, hypernatremia, and polyuria.

Question 20: Which antibiotic combination provides both gram-negative and MRSA coverage for empiric septic shock therapy?

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

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 21: Inadvertent hypothermia in critically ill patients is associated with which complication?

Improved neurological recovery in all patients
Improved antibiotic efficacy
Reduced oxygen consumption only
Coagulopathy, cardiac arrhythmias, and increased infection risk (Correct answer)

Correct answer: Coagulopathy, cardiac arrhythmias, and increased infection risk

Hypothermia impairs platelet function and coagulation factors, increases arrhythmia risk, and suppresses immune function, worsening outcomes in most critically ill patients.

Question 22: Which hand hygiene agent is most effective against Clostridioides difficile spores?

Soap and water (mechanical removal) (Correct answer)
Povidone-iodine solution
Chlorhexidine-based scrub
Alcohol-based hand rub (ABHR)

Correct answer: Soap and water (mechanical removal)

Alcohol-based hand rubs do not kill C. difficile spores; soap and water mechanically remove spores from hands and are required when C. diff is suspected.

Question 23: What is the primary rationale for glucose control targeting 140–180 mg/dL (rather than strict normoglycemia) in ICU patients?

It reduces the need for insulin infusions
It reduces antibiotic requirements
Tight glucose control (80–110) increases hypoglycemia risk and mortality, while moderate control balances glycemic harm (Correct answer)
It improves renal function specifically

Correct answer: Tight glucose control (80–110) increases hypoglycemia risk and mortality, while moderate control balances glycemic harm

The NICE-SUGAR trial showed tight glucose control (80–110 mg/dL) increased mortality and hypoglycemia; moderate control targeting 140–180 mg/dL is now standard.

Question 24: Which isolation precaution is required for a patient with suspected pulmonary tuberculosis?

Contact precautions
Droplet precautions
Airborne precautions with negative pressure room (Correct answer)
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 25: Which pupillary finding is associated with opioid toxicity?

Mid-position fixed pupils
Unequal pupils
Dilated pupils (mydriasis)
Pinpoint pupils (miosis) (Correct answer)

Correct answer: Pinpoint pupils (miosis)

Opioids stimulate the Edinger-Westphal nucleus via mu receptors, causing parasympathetic pupil constriction (miosis/pinpoint pupils).

Question 26: A critically ill patient develops carpopedal spasm and a positive Chvostek's sign. Which electrolyte abnormality is most likely?

Hyponatremia
Hypocalcemia (Correct answer)
Hypophosphatemia
Hyperkalemia

Correct answer: Hypocalcemia

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

Question 27: Which of the following signs is most indicative of increased intracranial pressure?

Hypotension
Bradcardia (Correct answer)
Hypertension
Tachycardia

Correct answer: Bradcardia

Bradycardia is a key component of Cushing's triad, which is a classic physiological response indicating significantly increased intracranial pressure (ICP). This triad, also including hypertension with a widening pulse pressure and irregular respirations, represents the body's attempt to maintain cerebral perfusion in the face of rising ICP. Therefore, bradycardia is a critical warning sign.

Question 28: Which clinical finding indicates adequate fluid resuscitation in septic shock?

Normal white blood cell count
MAP > 65, improving lactate clearance ≥ 10%, and improving urine output (Correct answer)
Absence of fever
Heart rate < 100 bpm alone

Correct answer: MAP > 65, improving lactate clearance ≥ 10%, and improving urine output

Resuscitation endpoints include MAP ≥ 65 mmHg, lactate clearance of ≥ 10% (targeting normalization), and improving urine output as markers of restored perfusion.

Question 29: Which of the following is the best indicator of tissue perfusion in a critically ill patient?

Lactate level (Correct answer)
Central venous pressure (CVP)
Mean arterial pressure (MAP)
Cardiac Output (CO)

Correct answer: Lactate level

Lactate level is the best indicator of tissue perfusion in a critically ill patient because it directly reflects the metabolic state of the tissues. Elevated lactate signifies anaerobic metabolism, which occurs when oxygen delivery is insufficient to meet cellular demands, indicating global tissue hypoperfusion and shock. It provides an early and sensitive measure of inadequate oxygenation at the cellular level.

Question 30: In obstructive lung disease, which ventilator adjustment reduces auto-PEEP (air trapping)?

Increase respiratory rate
Add more PEEP
Increase tidal volume
Decrease inspiratory time / increase expiratory time (Correct answer)

Correct answer: Decrease inspiratory time / increase expiratory time

Prolonging expiratory time allows trapped air to escape, reducing intrinsic PEEP in patients with obstructive physiology.

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

35 min

Time Limit

70%

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