ATLS
Post Test 2026 | MCQ Practice Questions &
Answers with Rationales | Complete Study
Guide
RESOURCE FEATURES
• ATLS 2026-style MCQ practice
• Answers for self-assessment
• Detailed explanations and rationales
• Trauma scenarios
• ABCDE review
• Emergency-management concepts
• Clinical decision-making practice
• ATLS 11-focused preparation
,ATLS Post Test 2026 | MCQ Practice Questions
& Answers with Rationales | Complete Study
Guide
Question 1
A 22 year old male is brought by ambulance to a small community hospital
after falling from the top of an 8 foot ladder. Initially, he was found to have
a large right pneumothorax. A chest tube was inserted and connected to an
underwater seal drainage collection system with negative pressure. A
repeat CXR demonstrates a residual, large right pneumothorax. After
transferring the patient to a verified trauma center, a third chest x-ray
reveals a persistent right pneumothorax. The chest tube appears to be
functioning and in good position. He remains hemodynamically normal
with no signs of respiratory distress. The most likely cause for the persistent
right pneumothorax is:
A. Flail chest
B. Diaphragmatic injury
C. Pulmonary contusion
D. Esophageal perforation
E. Tracheobronchial injury
,Rationale: Persistent pneumothorax despite a functioning chest tube in
good position suggests a tracheobronchial injury. These injuries prevent
lung re-expansion due to a persistent air leak from the airway.
Question 2
Which of the following is LEAST reliable for diagnosing ESOPHAGEAL
intubation?
A. Symmetrical chest wall movement
B. End-tidal CO2
C. Bilateral breath sounds
D. Oxygen saturation >92%
E. ETT above carina on chest x-ray
Answer: D. Oxygen saturation >92%
Rationale: Oxygen saturation can remain normal for several minutes even
with esophageal intubation, making it the least reliable sign. End-tidal CO2
is the gold standard for confirming proper ET tube placement.
Question 3
Which of the following signs necessitates the need for a definitive airway in
severe trauma patient?
A. Facial lacerations
B. Repeated vomiting
C. Severe maxillofacial trauma
, D. Sternal fracture
E. GCS 12
Answer: C. Severe maxillofacial trauma
Rationale: Severe maxillofacial trauma can compromise the airway due to
swelling, bleeding, and anatomical distortion, making it an indication for
definitive airway control.
Question 4
Twenty seven people are severely injured in an aircraft crash at a local
airport. The principles of triage include:
A. Establish a triage site within the internal perimeter of the crash site
B. Treat only the most severely injured patients first
C. Immediately transport all patients to the nearest hospital
D. Treat the greatest number of patients in the shortest period of time
E. Produce the greatest number of survivors based on available
resources
Rationale: Mass casualty triage aims to do the greatest good for the
greatest number of people based on available resources.
Question 5
Which of the following statements are correct?
Post Test 2026 | MCQ Practice Questions &
Answers with Rationales | Complete Study
Guide
RESOURCE FEATURES
• ATLS 2026-style MCQ practice
• Answers for self-assessment
• Detailed explanations and rationales
• Trauma scenarios
• ABCDE review
• Emergency-management concepts
• Clinical decision-making practice
• ATLS 11-focused preparation
,ATLS Post Test 2026 | MCQ Practice Questions
& Answers with Rationales | Complete Study
Guide
Question 1
A 22 year old male is brought by ambulance to a small community hospital
after falling from the top of an 8 foot ladder. Initially, he was found to have
a large right pneumothorax. A chest tube was inserted and connected to an
underwater seal drainage collection system with negative pressure. A
repeat CXR demonstrates a residual, large right pneumothorax. After
transferring the patient to a verified trauma center, a third chest x-ray
reveals a persistent right pneumothorax. The chest tube appears to be
functioning and in good position. He remains hemodynamically normal
with no signs of respiratory distress. The most likely cause for the persistent
right pneumothorax is:
A. Flail chest
B. Diaphragmatic injury
C. Pulmonary contusion
D. Esophageal perforation
E. Tracheobronchial injury
,Rationale: Persistent pneumothorax despite a functioning chest tube in
good position suggests a tracheobronchial injury. These injuries prevent
lung re-expansion due to a persistent air leak from the airway.
Question 2
Which of the following is LEAST reliable for diagnosing ESOPHAGEAL
intubation?
A. Symmetrical chest wall movement
B. End-tidal CO2
C. Bilateral breath sounds
D. Oxygen saturation >92%
E. ETT above carina on chest x-ray
Answer: D. Oxygen saturation >92%
Rationale: Oxygen saturation can remain normal for several minutes even
with esophageal intubation, making it the least reliable sign. End-tidal CO2
is the gold standard for confirming proper ET tube placement.
Question 3
Which of the following signs necessitates the need for a definitive airway in
severe trauma patient?
A. Facial lacerations
B. Repeated vomiting
C. Severe maxillofacial trauma
, D. Sternal fracture
E. GCS 12
Answer: C. Severe maxillofacial trauma
Rationale: Severe maxillofacial trauma can compromise the airway due to
swelling, bleeding, and anatomical distortion, making it an indication for
definitive airway control.
Question 4
Twenty seven people are severely injured in an aircraft crash at a local
airport. The principles of triage include:
A. Establish a triage site within the internal perimeter of the crash site
B. Treat only the most severely injured patients first
C. Immediately transport all patients to the nearest hospital
D. Treat the greatest number of patients in the shortest period of time
E. Produce the greatest number of survivors based on available
resources
Rationale: Mass casualty triage aims to do the greatest good for the
greatest number of people based on available resources.
Question 5
Which of the following statements are correct?
