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TPATC (TRANSPORT PROFESSIONAL ADVANCED
TRAUMA COURSE) CERTIFICATION ACTUAL EXAM
PREP 2026 ALL QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES ALREADY
A GRADED WITH EXPERT FEEDBACK |NEW AND
REVISED
1. A patient with a known pneumothorax is being prepared for air
transport. According to Boyle's Law, which of the following is the
greatest concern during ascent?
A) Decreased volume of the pneumothorax
B) Expansion of trapped air in the pleural space
C) Increased oxygen saturation
D) Decreased intrathoracic pressure
Rationale: Boyle's Law states that at a constant temperature, the
volume of a gas is inversely proportional to pressure. As altitude
increases, atmospheric pressure decreases, causing trapped gases
(such as those in a pneumothorax) to expand, which can lead to a
tension pneumothorax.
2. Which gas law explains why the partial pressure of oxygen decreases
at altitude, leading to hypoxia?
A) Boyle's Law
B) Charles's Law
C) Dalton's Law
D) Henry's Law
Rationale: Dalton's Law of Partial Pressures states that the total
pressure of a gas mixture is equal to the sum of the partial pressures of
each gas. At altitude, the total atmospheric pressure decreases, so the
partial pressure of oxygen also decreases, reducing the driving force
for oxygen to enter the bloodstream.
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3. During cold weather operations, a helicopter's oxygen cylinder shows
a lower than expected pressure reading. Which gas law explains this
phenomenon?
A) Boyle's Law
B) Charles's Law
C) Dalton's Law
D) Henry's Law
Rationale: Charles's Law states that the volume of a gas is directly
proportional to its temperature at constant pressure. In cold
conditions, the gas contracts, reducing pressure in the cylinder, which
may affect the available volume and duration of supply.
4. A patient with a history of COPD and pulmonary bullae is being
transported by air. According to Boyle's Law, which structure is at
greatest risk for barotrauma?
A) Coronary arteries
B) Cerebral ventricles
C) Pulmonary bullae
D) Renal tubules
Rationale: Trapped air in COPD patients' pulmonary bullae expands
at altitude per Boyle's Law, increasing the risk of pneumothorax. This
is why COPD patients are at greatest risk of barometric pressure
changes during flight.
5. The loss of barometric pressure that drives oxygen into the lungs is
the primary cause of which condition during aeromedical transport?
A) Hyperoxia
B) Hypoxia
C) Hypercarbia
D) Nitrogen narcosis
Rationale: The decrease in barometric pressure at altitude reduces the
partial pressure of oxygen in the inspired air, which diminishes the
pressure gradient driving oxygen into the lungs, leading to hypoxia.
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6. A patient is being transported in a helicopter that ascends to 8,000 feet
mean sea level. Which gas law explains why an endotracheal tube cuff
may increase pressure on the tracheal wall?
A) Boyle's Law
B) Charles's Law
C) Dalton's Law
D) Henry's Law
Rationale: Boyle's Law explains that as altitude increases and
pressure decreases, the volume of gas in the ET tube cuff expands,
increasing pressure on the tracheal wall and risking ischemia.
7. Decompression sickness (dysbarism) is primarily explained by which
gas law?
A) Boyle's Law
B) Charles's Law
C) Dalton's Law
D) Henry's Law
Rationale: Henry's Law states that the amount of gas dissolved in a
liquid is proportional to its partial pressure. During rapid ascent,
nitrogen dissolved in tissues comes out of solution too quickly, forming
bubbles that cause decompression sickness.
8. A patient with a traumatic brain injury is being transported. The
transport team notes a sudden decrease in the patient's level of
consciousness. Which of the following is the most likely cause related to
flight physiology?
A) Expansion of intracranial air or gas
B) Decreased cerebral blood flow due to hypoxia
C) Increased intracranial pressure from swelling
D) Hyperventilation-induced vasoconstriction
Rationale: Boyle's Law dictates that any trapped gas or air within the
cranium (e.g., from a previous surgery or injury) will expand at
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altitude, increasing intracranial pressure and potentially causing
neurologic deterioration.
9. A patient who is 24 hours post-operative following a bowel resection
is being transported. What is the primary concern regarding gas laws?
A) Expansion of abdominal gas causing distension and respiratory
compromise
B) Increased gastric acid production
C) Decreased bowel motility
D) Risk of wound dehiscence from pressure changes
Rationale: Gas trapped in the abdominal cavity (from surgery or ileus)
will expand at altitude according to Boyle's Law, leading to abdominal
distension, diaphragmatic splinting, and respiratory compromise.
10. Which of the following best describes the relationship between
altitude and atmospheric pressure?
A) As altitude increases, atmospheric pressure increases
B) As altitude increases, atmospheric pressure decreases
C) Atmospheric pressure remains constant regardless of altitude
D) Atmospheric pressure fluctuates randomly with altitude
Rationale: Atmospheric pressure decreases predictably with increasing
altitude. This is the foundational principle underlying all flight
physiology and gas law applications in transport medicine.
11. A flight crew member reports feeling dizzy and lightheaded during a
high-altitude transport. The crew member's SpO2 is 88%. What is the
most appropriate initial action?
A) Administer 100% oxygen via non-rebreather mask
B) Have the crew member breathe 100% oxygen and notify the pilot
C) Land the aircraft immediately
D) Have the crew member drink water and rest
Rationale: The crew member is experiencing hypoxia. The immediate
action is to administer 100% oxygen and notify the pilot to consider
TPATC (TRANSPORT PROFESSIONAL ADVANCED
TRAUMA COURSE) CERTIFICATION ACTUAL EXAM
PREP 2026 ALL QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES ALREADY
A GRADED WITH EXPERT FEEDBACK |NEW AND
REVISED
1. A patient with a known pneumothorax is being prepared for air
transport. According to Boyle's Law, which of the following is the
greatest concern during ascent?
A) Decreased volume of the pneumothorax
B) Expansion of trapped air in the pleural space
C) Increased oxygen saturation
D) Decreased intrathoracic pressure
Rationale: Boyle's Law states that at a constant temperature, the
volume of a gas is inversely proportional to pressure. As altitude
increases, atmospheric pressure decreases, causing trapped gases
(such as those in a pneumothorax) to expand, which can lead to a
tension pneumothorax.
2. Which gas law explains why the partial pressure of oxygen decreases
at altitude, leading to hypoxia?
A) Boyle's Law
B) Charles's Law
C) Dalton's Law
D) Henry's Law
Rationale: Dalton's Law of Partial Pressures states that the total
pressure of a gas mixture is equal to the sum of the partial pressures of
each gas. At altitude, the total atmospheric pressure decreases, so the
partial pressure of oxygen also decreases, reducing the driving force
for oxygen to enter the bloodstream.
,2|Page
3. During cold weather operations, a helicopter's oxygen cylinder shows
a lower than expected pressure reading. Which gas law explains this
phenomenon?
A) Boyle's Law
B) Charles's Law
C) Dalton's Law
D) Henry's Law
Rationale: Charles's Law states that the volume of a gas is directly
proportional to its temperature at constant pressure. In cold
conditions, the gas contracts, reducing pressure in the cylinder, which
may affect the available volume and duration of supply.
4. A patient with a history of COPD and pulmonary bullae is being
transported by air. According to Boyle's Law, which structure is at
greatest risk for barotrauma?
A) Coronary arteries
B) Cerebral ventricles
C) Pulmonary bullae
D) Renal tubules
Rationale: Trapped air in COPD patients' pulmonary bullae expands
at altitude per Boyle's Law, increasing the risk of pneumothorax. This
is why COPD patients are at greatest risk of barometric pressure
changes during flight.
5. The loss of barometric pressure that drives oxygen into the lungs is
the primary cause of which condition during aeromedical transport?
A) Hyperoxia
B) Hypoxia
C) Hypercarbia
D) Nitrogen narcosis
Rationale: The decrease in barometric pressure at altitude reduces the
partial pressure of oxygen in the inspired air, which diminishes the
pressure gradient driving oxygen into the lungs, leading to hypoxia.
,3|Page
6. A patient is being transported in a helicopter that ascends to 8,000 feet
mean sea level. Which gas law explains why an endotracheal tube cuff
may increase pressure on the tracheal wall?
A) Boyle's Law
B) Charles's Law
C) Dalton's Law
D) Henry's Law
Rationale: Boyle's Law explains that as altitude increases and
pressure decreases, the volume of gas in the ET tube cuff expands,
increasing pressure on the tracheal wall and risking ischemia.
7. Decompression sickness (dysbarism) is primarily explained by which
gas law?
A) Boyle's Law
B) Charles's Law
C) Dalton's Law
D) Henry's Law
Rationale: Henry's Law states that the amount of gas dissolved in a
liquid is proportional to its partial pressure. During rapid ascent,
nitrogen dissolved in tissues comes out of solution too quickly, forming
bubbles that cause decompression sickness.
8. A patient with a traumatic brain injury is being transported. The
transport team notes a sudden decrease in the patient's level of
consciousness. Which of the following is the most likely cause related to
flight physiology?
A) Expansion of intracranial air or gas
B) Decreased cerebral blood flow due to hypoxia
C) Increased intracranial pressure from swelling
D) Hyperventilation-induced vasoconstriction
Rationale: Boyle's Law dictates that any trapped gas or air within the
cranium (e.g., from a previous surgery or injury) will expand at
, 4|Page
altitude, increasing intracranial pressure and potentially causing
neurologic deterioration.
9. A patient who is 24 hours post-operative following a bowel resection
is being transported. What is the primary concern regarding gas laws?
A) Expansion of abdominal gas causing distension and respiratory
compromise
B) Increased gastric acid production
C) Decreased bowel motility
D) Risk of wound dehiscence from pressure changes
Rationale: Gas trapped in the abdominal cavity (from surgery or ileus)
will expand at altitude according to Boyle's Law, leading to abdominal
distension, diaphragmatic splinting, and respiratory compromise.
10. Which of the following best describes the relationship between
altitude and atmospheric pressure?
A) As altitude increases, atmospheric pressure increases
B) As altitude increases, atmospheric pressure decreases
C) Atmospheric pressure remains constant regardless of altitude
D) Atmospheric pressure fluctuates randomly with altitude
Rationale: Atmospheric pressure decreases predictably with increasing
altitude. This is the foundational principle underlying all flight
physiology and gas law applications in transport medicine.
11. A flight crew member reports feeling dizzy and lightheaded during a
high-altitude transport. The crew member's SpO2 is 88%. What is the
most appropriate initial action?
A) Administer 100% oxygen via non-rebreather mask
B) Have the crew member breathe 100% oxygen and notify the pilot
C) Land the aircraft immediately
D) Have the crew member drink water and rest
Rationale: The crew member is experiencing hypoxia. The immediate
action is to administer 100% oxygen and notify the pilot to consider
