1
ATLS 10th Edition Post Test 2025 – 120 Verified Questions &
Answers with Rationales (PDF Download)
,2
1. A 28-year-old male involved in a motorcycle crash presents with tachypnea,
hypotension, and tracheal deviation to the left. What is the most appropriate
immediate intervention?
A. Chest tube insertion on the left
B. Needle decompression on the right
C. Pericardiocentesis
D. Administer high-flow oxygen only
Correct Answer: B. Needle decompression on the right
Rationale: This patient shows classic signs of a tension pneumothorax, including
hypotension, tachypnea, and tracheal deviation away from the affected side. In
trauma scenarios, tension pneumothorax must be treated immediately due to the
rapid deterioration that can result from cardiovascular collapse. Waiting for
imaging or chest tube setup can waste critical time. Immediate needle
decompression in the second intercostal space at the midclavicular line on the
right side (the side of the pneumothorax) is the lifesaving intervention. Chest tube
insertion can follow after decompression, but it is not the initial response. Tracheal
deviation away from the affected side is a hallmark finding, and failing to act
promptly may lead to death due to obstructive shock. Administering oxygen
,3
without addressing the underlying pressure buildup is inadequate. ATLS guidelines
stress the importance of clinical diagnosis and rapid intervention over imaging
when tension pneumothorax is suspected.
2. A 35-year-old female pedestrian struck by a car presents with Glasgow
Coma Scale (GCS) of 6, unequal pupils, and decerebrate posturing. What is
the highest priority?
A. Obtain a head CT
B. Insert an oropharyngeal airway
C. Secure definitive airway via endotracheal intubation
D. Administer mannitol immediately
Correct Answer: C. Secure definitive airway via endotracheal intubation
Rationale: A GCS score ≤8 is an indication for intubation, as it signifies a
decreased level of consciousness and potential loss of airway protection. In this
scenario, the patient not only has a GCS of 6 but also shows signs of severe
neurologic compromise (decerebrate posturing and unequal pupils). These findings
suggest rising intracranial pressure and brainstem involvement. Before any
imaging is done or mannitol administered, the airway must be secured to prevent
hypoxia and secondary brain injury. Intubation provides airway protection, allows
, 4
for controlled ventilation, and helps reduce the risk of aspiration. While CT and
osmotic therapy are critical components of further evaluation and management,
they follow after stabilization of airway, breathing, and circulation. An
oropharyngeal airway may be inadequate in an unconscious patient with no gag
reflex, and mannitol should not be administered until a definitive diagnosis and
imaging confirm its necessity.
3. A 22-year-old trauma patient presents with hypotension, muffled heart
sounds, and distended neck veins. What is the most likely diagnosis?
A. Hemothorax
B. Cardiac tamponade
C. Tension pneumothorax
D. Aortic rupture
Correct Answer: B. Cardiac tamponade
Rationale: The triad of hypotension, muffled heart sounds, and jugular venous
distension—known as Beck’s triad—is a classic indication of cardiac tamponade.
This condition occurs when fluid, typically blood in trauma cases, accumulates in
the pericardial sac, preventing effective cardiac filling and output. Cardiac
tamponade is a form of obstructive shock, and diagnosis is primarily clinical.
ATLS 10th Edition Post Test 2025 – 120 Verified Questions &
Answers with Rationales (PDF Download)
,2
1. A 28-year-old male involved in a motorcycle crash presents with tachypnea,
hypotension, and tracheal deviation to the left. What is the most appropriate
immediate intervention?
A. Chest tube insertion on the left
B. Needle decompression on the right
C. Pericardiocentesis
D. Administer high-flow oxygen only
Correct Answer: B. Needle decompression on the right
Rationale: This patient shows classic signs of a tension pneumothorax, including
hypotension, tachypnea, and tracheal deviation away from the affected side. In
trauma scenarios, tension pneumothorax must be treated immediately due to the
rapid deterioration that can result from cardiovascular collapse. Waiting for
imaging or chest tube setup can waste critical time. Immediate needle
decompression in the second intercostal space at the midclavicular line on the
right side (the side of the pneumothorax) is the lifesaving intervention. Chest tube
insertion can follow after decompression, but it is not the initial response. Tracheal
deviation away from the affected side is a hallmark finding, and failing to act
promptly may lead to death due to obstructive shock. Administering oxygen
,3
without addressing the underlying pressure buildup is inadequate. ATLS guidelines
stress the importance of clinical diagnosis and rapid intervention over imaging
when tension pneumothorax is suspected.
2. A 35-year-old female pedestrian struck by a car presents with Glasgow
Coma Scale (GCS) of 6, unequal pupils, and decerebrate posturing. What is
the highest priority?
A. Obtain a head CT
B. Insert an oropharyngeal airway
C. Secure definitive airway via endotracheal intubation
D. Administer mannitol immediately
Correct Answer: C. Secure definitive airway via endotracheal intubation
Rationale: A GCS score ≤8 is an indication for intubation, as it signifies a
decreased level of consciousness and potential loss of airway protection. In this
scenario, the patient not only has a GCS of 6 but also shows signs of severe
neurologic compromise (decerebrate posturing and unequal pupils). These findings
suggest rising intracranial pressure and brainstem involvement. Before any
imaging is done or mannitol administered, the airway must be secured to prevent
hypoxia and secondary brain injury. Intubation provides airway protection, allows
, 4
for controlled ventilation, and helps reduce the risk of aspiration. While CT and
osmotic therapy are critical components of further evaluation and management,
they follow after stabilization of airway, breathing, and circulation. An
oropharyngeal airway may be inadequate in an unconscious patient with no gag
reflex, and mannitol should not be administered until a definitive diagnosis and
imaging confirm its necessity.
3. A 22-year-old trauma patient presents with hypotension, muffled heart
sounds, and distended neck veins. What is the most likely diagnosis?
A. Hemothorax
B. Cardiac tamponade
C. Tension pneumothorax
D. Aortic rupture
Correct Answer: B. Cardiac tamponade
Rationale: The triad of hypotension, muffled heart sounds, and jugular venous
distension—known as Beck’s triad—is a classic indication of cardiac tamponade.
This condition occurs when fluid, typically blood in trauma cases, accumulates in
the pericardial sac, preventing effective cardiac filling and output. Cardiac
tamponade is a form of obstructive shock, and diagnosis is primarily clinical.
