AIR METHODS Critical Care Pre-Hire Exam Review |
Comprehensive Question Bank 2026/2027
Question 1
During critical care transport of a mechanically ventilated patient, the
flight crew notes that the endotracheal tube cuff pressure increases
significantly during ascent to a higher cruising altitude. Which gas law
accounts for this phenomenon?
• A. Boyle's Law
• B. Charles' Law
• C. Dalton's Law
• D. Henry's Law
Correct Answer: A
Detailed Rationale: Boyle's Law states that pressure and volume are
inversely proportional at a constant temperature. As barometric
pressure decreases during aircraft ascent, the volume of air sealed
inside the endotracheal tube cuff expands, raising cuff pressure.
Question 2
When performing rapid sequence induction (RSI) on a severe traumatic
brain injury patient with borderline systemic blood pressure, which
induction agent is traditionally favored to preserve cerebral perfusion
pressure compared to propofol?
• A. Propofol
, • B. Etomidate
• C. High-dose fentanyl
• D. Remifentanil infusion
Correct Answer: B
Detailed Rationale: Etomidate is an induction agent that provides
hemodynamic stability with minimal impact on mean arterial pressure,
making it useful in patients with traumatic brain injury where
maintaining cerebral perfusion pressure is critical.
Question 3
A mechanically ventilated patient with severe chronic obstructive
pulmonary disease (COPD) develops dynamic hyperinflation and auto-
PEEP due to air trapping. Which ventilator adjustment is most
appropriate to mitigate this condition?
• A. Increase the respiratory rate to blow off excess carbon dioxide.
• B. Prolong the inspiratory time to maximize alveolar recruitment.
• C. Shorten the inspiratory time and decrease the respiratory rate
to allow adequate expiration time.
• D. Add high levels of external PEEP matching the auto-PEEP
exactly.
Correct Answer: C
Detailed Rationale: Patients with obstructive airway disease require
extended exhalation times to empty their lungs completely. Shortening
inspiratory time and decreasing the respiratory rate provides the
necessary time for complete exhalation, preventing auto-PEEP.
,Question 4
What physiological classification of hypoxia is caused by a reduction in
the oxygen-carrying capacity of the blood, such as in carbon monoxide
poisoning or severe anemia?
• A. Hypoxic hypoxia
• B. Hypemic hypoxia
• C. Stagnant hypoxia
• D. Histotoxic hypoxia
Correct Answer: B
Detailed Rationale: Hypemic hypoxia occurs when functional
hemoglobin available for oxygen transport is decreased or chemically
bound by toxins like carbon monoxide, preventing normal oxygen
delivery to peripheral tissues despite normal arterial oxygen tension.
Question 5
During the operation of an intra-aortic balloon pump (IABP) in
cardiogenic shock, at what specific point in the cardiac cycle does
balloon inflation occur to maximize coronary artery perfusion?
• A. Immediately at the onset of systole
• B. At the dicrotic notch, corresponding to the closure of the aortic
valve
• C. Mid-way through atrial depolarization
• D. Exactly at the peak of the QRS complex
Correct Answer: B
, Detailed Rationale: The intra-aortic balloon inflates at the dicrotic
notch, which marks aortic valve closure and the beginning of diastole.
This diastolic augmentation displaces blood backward into the coronary
ostia to enhance myocardial oxygen supply.
Question 6
In the management of severe trauma, the lethal triad consists of which
three interconnected physiological derangements?
• A. Hypertension, tachycardia, and hyperglycemia
• B. Hypothermia, acidosis, and coagulopathy
• C. Hypercalcemia, alkalosis, and hypoxia
• D. Hypokalemia, renal failure, and hyperthermia
Correct Answer: B
Detailed Rationale: The lethal triad of trauma comprises hypothermia,
metabolic acidosis, and coagulopathy. These factors exacerbate one
another in a vicious cycle that significantly increases mortality if
aggressive damage control resuscitation is delayed.
Question 7
Using the Parkland formula (4 mL × kg × TBSA%) for a patient weighing
80 kg with a 40% total body surface area burn, calculate the total
volume of crystalloid fluid required for the first 24 hours post-injury.
• A. 6400 mL
• B. 12800 mL
• C. 3200 mL
Comprehensive Question Bank 2026/2027
Question 1
During critical care transport of a mechanically ventilated patient, the
flight crew notes that the endotracheal tube cuff pressure increases
significantly during ascent to a higher cruising altitude. Which gas law
accounts for this phenomenon?
• A. Boyle's Law
• B. Charles' Law
• C. Dalton's Law
• D. Henry's Law
Correct Answer: A
Detailed Rationale: Boyle's Law states that pressure and volume are
inversely proportional at a constant temperature. As barometric
pressure decreases during aircraft ascent, the volume of air sealed
inside the endotracheal tube cuff expands, raising cuff pressure.
Question 2
When performing rapid sequence induction (RSI) on a severe traumatic
brain injury patient with borderline systemic blood pressure, which
induction agent is traditionally favored to preserve cerebral perfusion
pressure compared to propofol?
• A. Propofol
, • B. Etomidate
• C. High-dose fentanyl
• D. Remifentanil infusion
Correct Answer: B
Detailed Rationale: Etomidate is an induction agent that provides
hemodynamic stability with minimal impact on mean arterial pressure,
making it useful in patients with traumatic brain injury where
maintaining cerebral perfusion pressure is critical.
Question 3
A mechanically ventilated patient with severe chronic obstructive
pulmonary disease (COPD) develops dynamic hyperinflation and auto-
PEEP due to air trapping. Which ventilator adjustment is most
appropriate to mitigate this condition?
• A. Increase the respiratory rate to blow off excess carbon dioxide.
• B. Prolong the inspiratory time to maximize alveolar recruitment.
• C. Shorten the inspiratory time and decrease the respiratory rate
to allow adequate expiration time.
• D. Add high levels of external PEEP matching the auto-PEEP
exactly.
Correct Answer: C
Detailed Rationale: Patients with obstructive airway disease require
extended exhalation times to empty their lungs completely. Shortening
inspiratory time and decreasing the respiratory rate provides the
necessary time for complete exhalation, preventing auto-PEEP.
,Question 4
What physiological classification of hypoxia is caused by a reduction in
the oxygen-carrying capacity of the blood, such as in carbon monoxide
poisoning or severe anemia?
• A. Hypoxic hypoxia
• B. Hypemic hypoxia
• C. Stagnant hypoxia
• D. Histotoxic hypoxia
Correct Answer: B
Detailed Rationale: Hypemic hypoxia occurs when functional
hemoglobin available for oxygen transport is decreased or chemically
bound by toxins like carbon monoxide, preventing normal oxygen
delivery to peripheral tissues despite normal arterial oxygen tension.
Question 5
During the operation of an intra-aortic balloon pump (IABP) in
cardiogenic shock, at what specific point in the cardiac cycle does
balloon inflation occur to maximize coronary artery perfusion?
• A. Immediately at the onset of systole
• B. At the dicrotic notch, corresponding to the closure of the aortic
valve
• C. Mid-way through atrial depolarization
• D. Exactly at the peak of the QRS complex
Correct Answer: B
, Detailed Rationale: The intra-aortic balloon inflates at the dicrotic
notch, which marks aortic valve closure and the beginning of diastole.
This diastolic augmentation displaces blood backward into the coronary
ostia to enhance myocardial oxygen supply.
Question 6
In the management of severe trauma, the lethal triad consists of which
three interconnected physiological derangements?
• A. Hypertension, tachycardia, and hyperglycemia
• B. Hypothermia, acidosis, and coagulopathy
• C. Hypercalcemia, alkalosis, and hypoxia
• D. Hypokalemia, renal failure, and hyperthermia
Correct Answer: B
Detailed Rationale: The lethal triad of trauma comprises hypothermia,
metabolic acidosis, and coagulopathy. These factors exacerbate one
another in a vicious cycle that significantly increases mortality if
aggressive damage control resuscitation is delayed.
Question 7
Using the Parkland formula (4 mL × kg × TBSA%) for a patient weighing
80 kg with a 40% total body surface area burn, calculate the total
volume of crystalloid fluid required for the first 24 hours post-injury.
• A. 6400 mL
• B. 12800 mL
• C. 3200 mL
