AEROMEDICAL CRITICAL CARE EXAM: COMPREHENSIVE 200-
QUESTION BANK COMPLETE WITH VERIFIED ANSWERS
1. Which gas law dictates that a closed pneumothorax will expand in
size as the aircraft gains altitude?
A) Dalton's Law
B) Charles's Law
C) Boyle's Law
D) Henry's Law
Answer: C
Rationale: Boyle's Law states that gas volume is inversely proportional
to pressure. As altitude increases, atmospheric pressure decreases,
causing trapped gases to expand.
2. At what altitude does the partial pressure of oxygen typically drop
to a level requiring supplemental oxygen for a healthy individual?
A) 5,000 feet
B) 8,000 feet
C) 10,000 feet
D) 14,000 feet
Answer: C
Rationale: At approximately 10,000 feet, the partial pressure of oxygen
falls to around 55 mmHg, leading to a drop in oxygen saturation to
roughly 90%, necessitating supplemental oxygen.
3. Which of the following best describes Dalton's Law in the context of
aeromedical transport?
A) The total pressure of a gas mixture is the sum of the partial pressures
of individual gases.
,B) Gas volume increases proportionally with absolute temperature.
C) The amount of dissolved gas in a liquid is proportional to its partial
pressure.
D) Gas volume is inversely proportional to pressure at a constant
temperature.
Answer: A
Rationale: Dalton's Law pertains to gas mixtures, stating that the total
pressure exerted by a mixture of gases is equal to the sum of the partial
pressures of the individual gases.
4. A patient with a decompression sickness (DCS) is being transported.
Which gas law explains the formation of bubbles in the bloodstream?
A) Charles's Law
B) Henry's Law
C) Boyle's Law
D) Gay-Lussac's Law
Answer: B
Rationale: Henry's Law states that the solubility of a gas in a liquid is
directly proportional to the partial pressure of that gas. A rapid
decrease in pressure reduces gas solubility, causing nitrogen bubbles to
form in the blood.
5. During flight, a medical crew notices the oxygen saturation of a
patient with COPD dropping. What is the primary physiological
mechanism for this decrease?
A) Increased partial pressure of oxygen
B) Decreased partial pressure of oxygen
C) Increased barometric pressure
D) Decreased alveolar carbon dioxide
Answer: B
,Rationale: As altitude increases, the barometric pressure decreases,
which directly lowers the partial pressure of oxygen in the alveoli,
leading to hypoxemia.
6. Which of the following is the most common cause of spatial
disorientation in aeromedical transport?
A) Vestibular illusions due to lack of visual reference
B) Hyperventilation due to stress
C) Noise and vibration exposure
D) High G-forces during maneuvering
Answer: A
Rationale: Spatial disorientation most commonly occurs when there is a
lack of visual reference points, leading to vestibular illusions such as the
leans or somatogyral illusion.
7. A patient with a head injury is being transported by air. What is the
primary concern regarding altitude?
A) Decreased intracranial pressure
B) Increased intracranial pressure
C) Hypocapnia
D) Hypernatremia
Answer: B
Rationale: Altitude-induced hypoxia can cause cerebral vasodilation,
which increases cerebral blood flow and can exacerbate intracranial
pressure in patients with head injuries.
8. Which law explains why a partially filled IV bag may leak or expand
during a flight?
A) Henry's Law
B) Dalton's Law
, C) Charles's Law
D) Boyle's Law
Answer: D
Rationale: Boyle's Law applies here; as altitude increases, cabin
pressure decreases, allowing the trapped air in the IV bag to expand.
9. What is the target oxygen saturation range for a patient with acute
respiratory distress syndrome (ARDS) during aeromedical transport?
A) 85-90%
B) 88-92%
C) 92-96%
D) 95-100%
Answer: B
Rationale: For ARDS patients, a target SpO2 of 88-92% is generally
recommended to avoid oxygen toxicity while maintaining adequate
tissue perfusion.
10. Which of the following medications is the first-line treatment for
anaphylaxis during an aeromedical transport?
A) Diphenhydramine
B) Epinephrine
C) Methylprednisolone
D) Albuterol
Answer: B
Rationale: Intramuscular epinephrine is the first-line treatment for
anaphylaxis, as it reverses bronchospasm and prevents cardiovascular
collapse.
11. A patient is experiencing a tension pneumothorax. What is the
immediate priority?
QUESTION BANK COMPLETE WITH VERIFIED ANSWERS
1. Which gas law dictates that a closed pneumothorax will expand in
size as the aircraft gains altitude?
A) Dalton's Law
B) Charles's Law
C) Boyle's Law
D) Henry's Law
Answer: C
Rationale: Boyle's Law states that gas volume is inversely proportional
to pressure. As altitude increases, atmospheric pressure decreases,
causing trapped gases to expand.
2. At what altitude does the partial pressure of oxygen typically drop
to a level requiring supplemental oxygen for a healthy individual?
A) 5,000 feet
B) 8,000 feet
C) 10,000 feet
D) 14,000 feet
Answer: C
Rationale: At approximately 10,000 feet, the partial pressure of oxygen
falls to around 55 mmHg, leading to a drop in oxygen saturation to
roughly 90%, necessitating supplemental oxygen.
3. Which of the following best describes Dalton's Law in the context of
aeromedical transport?
A) The total pressure of a gas mixture is the sum of the partial pressures
of individual gases.
,B) Gas volume increases proportionally with absolute temperature.
C) The amount of dissolved gas in a liquid is proportional to its partial
pressure.
D) Gas volume is inversely proportional to pressure at a constant
temperature.
Answer: A
Rationale: Dalton's Law pertains to gas mixtures, stating that the total
pressure exerted by a mixture of gases is equal to the sum of the partial
pressures of the individual gases.
4. A patient with a decompression sickness (DCS) is being transported.
Which gas law explains the formation of bubbles in the bloodstream?
A) Charles's Law
B) Henry's Law
C) Boyle's Law
D) Gay-Lussac's Law
Answer: B
Rationale: Henry's Law states that the solubility of a gas in a liquid is
directly proportional to the partial pressure of that gas. A rapid
decrease in pressure reduces gas solubility, causing nitrogen bubbles to
form in the blood.
5. During flight, a medical crew notices the oxygen saturation of a
patient with COPD dropping. What is the primary physiological
mechanism for this decrease?
A) Increased partial pressure of oxygen
B) Decreased partial pressure of oxygen
C) Increased barometric pressure
D) Decreased alveolar carbon dioxide
Answer: B
,Rationale: As altitude increases, the barometric pressure decreases,
which directly lowers the partial pressure of oxygen in the alveoli,
leading to hypoxemia.
6. Which of the following is the most common cause of spatial
disorientation in aeromedical transport?
A) Vestibular illusions due to lack of visual reference
B) Hyperventilation due to stress
C) Noise and vibration exposure
D) High G-forces during maneuvering
Answer: A
Rationale: Spatial disorientation most commonly occurs when there is a
lack of visual reference points, leading to vestibular illusions such as the
leans or somatogyral illusion.
7. A patient with a head injury is being transported by air. What is the
primary concern regarding altitude?
A) Decreased intracranial pressure
B) Increased intracranial pressure
C) Hypocapnia
D) Hypernatremia
Answer: B
Rationale: Altitude-induced hypoxia can cause cerebral vasodilation,
which increases cerebral blood flow and can exacerbate intracranial
pressure in patients with head injuries.
8. Which law explains why a partially filled IV bag may leak or expand
during a flight?
A) Henry's Law
B) Dalton's Law
, C) Charles's Law
D) Boyle's Law
Answer: D
Rationale: Boyle's Law applies here; as altitude increases, cabin
pressure decreases, allowing the trapped air in the IV bag to expand.
9. What is the target oxygen saturation range for a patient with acute
respiratory distress syndrome (ARDS) during aeromedical transport?
A) 85-90%
B) 88-92%
C) 92-96%
D) 95-100%
Answer: B
Rationale: For ARDS patients, a target SpO2 of 88-92% is generally
recommended to avoid oxygen toxicity while maintaining adequate
tissue perfusion.
10. Which of the following medications is the first-line treatment for
anaphylaxis during an aeromedical transport?
A) Diphenhydramine
B) Epinephrine
C) Methylprednisolone
D) Albuterol
Answer: B
Rationale: Intramuscular epinephrine is the first-line treatment for
anaphylaxis, as it reverses bronchospasm and prevents cardiovascular
collapse.
11. A patient is experiencing a tension pneumothorax. What is the
immediate priority?
