ATLS Pediatric Thoracic Trauma
Practice Test Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
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1. A 6-year-old child is brought after a motor-vehicle collision. He
has severe respiratory distress, absent breath sounds on the right,
distended neck veins, and hypotension. What is the most likely
diagnosis?
A. Simple pneumothorax
B. Pulmonary contusion
C. Tension pneumothorax
D. Cardiac contusion
Answer: C. Tension pneumothorax
Rationale: Tension pneumothorax is an immediately life-threatening
thoracic injury. Progressive intrathoracic pressure impairs venous
return and ventilation, producing respiratory distress, hypotension,
and potentially cardiac arrest. Treatment should not be delayed for
imaging when the clinical diagnosis is clear.
2. Why can severe thoracic injury occur in a child without rib
fractures?
A. Children's lungs are less vascular
B. Children's ribs are completely ossified
C. The pediatric chest wall is highly compliant and transmits
, energy to internal organs
D. Children have larger thoracic muscles
Answer: C. The pediatric chest wall is highly compliant and
transmits energy to internal organs
Rationale: The pliable pediatric chest wall may deform substantially
without fracturing. Energy can therefore be transmitted directly to the
lungs, heart, and great vessels, producing serious internal injury
despite an apparently intact chest wall.
3. What is the most common mechanism of pediatric thoracic
trauma?
A. Penetrating stab wounds
B. Gunshot wounds
C. Blast injuries
D. Blunt trauma
Answer: D. Blunt trauma
Rationale: Most pediatric thoracic injuries are caused by blunt
mechanisms, particularly motor-vehicle crashes and falls. Penetrating
thoracic trauma is less common in younger children but becomes more
relevant in adolescents.
4. During the primary survey, which thoracic problem should be
treated immediately when suspected clinically?
A. Small stable pulmonary contusion
B. Isolated rib fracture
C. Tension pneumothorax
D. Minor pneumomediastinum
Answer: C. Tension pneumothorax
,Rationale: Tension physiology can rapidly compromise both
oxygenation and circulation. Because delay can lead to cardiovascular
collapse, immediate decompression is indicated when the clinical
findings support the diagnosis.
5. A child has blunt chest trauma and increasing oxygen
requirements. Chest examination reveals diffuse crackles. Which
injury is particularly likely?
A. Esophageal rupture
B. Pulmonary contusion
C. Isolated diaphragmatic rupture
D. Aortic transection
Answer: B. Pulmonary contusion
Rationale: Pulmonary contusion is common after blunt pediatric chest
trauma because the compliant chest wall transmits kinetic energy to
the underlying lung. Hypoxemia may worsen over several hours as
edema and hemorrhage develop.
6. Which finding is most concerning for tension pneumothorax?
A. Mild chest tenderness
B. Small area of ecchymosis
C. Respiratory distress with hypotension and unilateral absent
breath sounds
D. Isolated tachycardia after crying
Answer: C. Respiratory distress with hypotension and unilateral
absent breath sounds
Rationale: The combination of respiratory compromise, unilateral
decreased or absent breath sounds, and circulatory deterioration
strongly suggests tension pneumothorax. Treatment should be prompt
rather than waiting for radiographic confirmation.
, 7. What is the principal physiologic danger of a large pneumothorax
in a child?
A. Increased renal perfusion
B. Increased venous return
C. Reduced ventilation and impaired venous return
D. Increased cardiac preload
Answer: C. Reduced ventilation and impaired venous return
Rationale: A pneumothorax can compress the lung and, when under
tension, increase intrathoracic pressure enough to reduce venous
return. The resulting combination of hypoxemia and obstructive shock
can rapidly become fatal.
8. A child with chest trauma has respiratory distress and severe
hypoxemia. What is the first priority during the primary survey?
A. Obtain CT immediately
B. Obtain a formal pulmonary function test
C. Support oxygenation and ventilation while identifying
immediately life-threatening thoracic injury
D. Perform bronchoscopy before treatment
Answer: C. Support oxygenation and ventilation while identifying
immediately life-threatening thoracic injury
Rationale: ATLS management prioritizes airway and breathing.
Hypoxemia is a major preventable cause of deterioration after
pediatric trauma, so oxygenation and ventilation must be addressed
immediately while life-threatening thoracic injuries are sought.
9. Which statement about pediatric rib fractures is most accurate?
A. They occur in nearly every severe chest injury
B. Their presence excludes pulmonary injury
C. They are less common because children's ribs are more
Practice Test Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. A 6-year-old child is brought after a motor-vehicle collision. He
has severe respiratory distress, absent breath sounds on the right,
distended neck veins, and hypotension. What is the most likely
diagnosis?
A. Simple pneumothorax
B. Pulmonary contusion
C. Tension pneumothorax
D. Cardiac contusion
Answer: C. Tension pneumothorax
Rationale: Tension pneumothorax is an immediately life-threatening
thoracic injury. Progressive intrathoracic pressure impairs venous
return and ventilation, producing respiratory distress, hypotension,
and potentially cardiac arrest. Treatment should not be delayed for
imaging when the clinical diagnosis is clear.
2. Why can severe thoracic injury occur in a child without rib
fractures?
A. Children's lungs are less vascular
B. Children's ribs are completely ossified
C. The pediatric chest wall is highly compliant and transmits
, energy to internal organs
D. Children have larger thoracic muscles
Answer: C. The pediatric chest wall is highly compliant and
transmits energy to internal organs
Rationale: The pliable pediatric chest wall may deform substantially
without fracturing. Energy can therefore be transmitted directly to the
lungs, heart, and great vessels, producing serious internal injury
despite an apparently intact chest wall.
3. What is the most common mechanism of pediatric thoracic
trauma?
A. Penetrating stab wounds
B. Gunshot wounds
C. Blast injuries
D. Blunt trauma
Answer: D. Blunt trauma
Rationale: Most pediatric thoracic injuries are caused by blunt
mechanisms, particularly motor-vehicle crashes and falls. Penetrating
thoracic trauma is less common in younger children but becomes more
relevant in adolescents.
4. During the primary survey, which thoracic problem should be
treated immediately when suspected clinically?
A. Small stable pulmonary contusion
B. Isolated rib fracture
C. Tension pneumothorax
D. Minor pneumomediastinum
Answer: C. Tension pneumothorax
,Rationale: Tension physiology can rapidly compromise both
oxygenation and circulation. Because delay can lead to cardiovascular
collapse, immediate decompression is indicated when the clinical
findings support the diagnosis.
5. A child has blunt chest trauma and increasing oxygen
requirements. Chest examination reveals diffuse crackles. Which
injury is particularly likely?
A. Esophageal rupture
B. Pulmonary contusion
C. Isolated diaphragmatic rupture
D. Aortic transection
Answer: B. Pulmonary contusion
Rationale: Pulmonary contusion is common after blunt pediatric chest
trauma because the compliant chest wall transmits kinetic energy to
the underlying lung. Hypoxemia may worsen over several hours as
edema and hemorrhage develop.
6. Which finding is most concerning for tension pneumothorax?
A. Mild chest tenderness
B. Small area of ecchymosis
C. Respiratory distress with hypotension and unilateral absent
breath sounds
D. Isolated tachycardia after crying
Answer: C. Respiratory distress with hypotension and unilateral
absent breath sounds
Rationale: The combination of respiratory compromise, unilateral
decreased or absent breath sounds, and circulatory deterioration
strongly suggests tension pneumothorax. Treatment should be prompt
rather than waiting for radiographic confirmation.
, 7. What is the principal physiologic danger of a large pneumothorax
in a child?
A. Increased renal perfusion
B. Increased venous return
C. Reduced ventilation and impaired venous return
D. Increased cardiac preload
Answer: C. Reduced ventilation and impaired venous return
Rationale: A pneumothorax can compress the lung and, when under
tension, increase intrathoracic pressure enough to reduce venous
return. The resulting combination of hypoxemia and obstructive shock
can rapidly become fatal.
8. A child with chest trauma has respiratory distress and severe
hypoxemia. What is the first priority during the primary survey?
A. Obtain CT immediately
B. Obtain a formal pulmonary function test
C. Support oxygenation and ventilation while identifying
immediately life-threatening thoracic injury
D. Perform bronchoscopy before treatment
Answer: C. Support oxygenation and ventilation while identifying
immediately life-threatening thoracic injury
Rationale: ATLS management prioritizes airway and breathing.
Hypoxemia is a major preventable cause of deterioration after
pediatric trauma, so oxygenation and ventilation must be addressed
immediately while life-threatening thoracic injuries are sought.
9. Which statement about pediatric rib fractures is most accurate?
A. They occur in nearly every severe chest injury
B. Their presence excludes pulmonary injury
C. They are less common because children's ribs are more
