ATLS 11 Thoracic Trauma 2026/2027 | Advanced
Trauma Life Support 11th Edition, Thoracic Injury
Practice Questions & Answers, Trauma Exam Prep &
Comprehensive Review
Question 1: A 35-year-old male is brought to the emergency
department after a high-speed motor vehicle collision. He is anxious,
tachypneic, and has absent breath sounds on the right with
hyperresonance to percussion. His blood pressure is 80/50 mmHg, and
his trachea is deviated to the left. What is the most appropriate
immediate management?
A. Obtain an urgent portable chest radiograph
B. Perform immediate needle decompression
C. Administer a 2-liter bolus of crystalloid
D. Prepare for an emergency department thoracotomy
CORRECT ANSWER: B. Perform immediate needle decompression
Rationale: The clinical picture of hypotension, absent breath sounds,
hyperresonance, and tracheal deviation is classic for a tension
pneumothorax. This is a life-threatening condition that requires immediate
decompression without waiting for radiographic confirmation. Needle
decompression should be performed immediately, followed by tube
thoracostomy. A chest radiograph would only delay definitive treatment in
this unstable patient.
Question 2: A 28-year-old female is stabbed in the left chest. She is
hypotensive with distended neck veins and muffled heart sounds.
What is the most likely diagnosis?
A. Tension pneumothorax
B. Massive hemothorax
C. Cardiac tamponade
D. Open pneumothorax
CORRECT ANSWER: C. Cardiac tamponade
Rationale: The triad of hypotension, distended neck veins, and muffled
heart sounds constitutes Beck's triad, which is pathognomonic for cardiac
tamponade. Penetrating trauma to the chest can cause bleeding into the
pericardial sac, which restricts cardiac filling and leads to obstructive
shock. This requires urgent pericardial drainage.
,Question 3: A 45-year-old male is involved in a blunt trauma accident.
He has a flail chest segment and is becoming progressively hypoxic
despite high-flow oxygen. What is the most appropriate management?
A. External stabilization of the chest wall
B. Intercostal nerve blocks
C. Endotracheal intubation and mechanical ventilation
D. Intravenous sedation
CORRECT ANSWER: C. Endotracheal intubation and mechanical
ventilation
Rationale: A flail chest with progressive hypoxia despite supplemental
oxygen indicates respiratory failure due to inadequate ventilation and
underlying pulmonary contusion. Positive pressure ventilation provides
internal pneumatic stabilization of the flail segment, improves oxygenation,
and addresses the underlying respiratory failure. External stabilization and
nerve blocks are adjuncts but do not address the impending respiratory
failure.
Question 4: A 22-year-old male sustains a gunshot wound to the right
chest. A chest tube is inserted and returns 1200 mL of blood
immediately. He remains hypotensive. What is the most appropriate
next step?
A. Insert a second chest tube
B. Perform an emergency department thoracotomy
C. Obtain a CT scan of the chest
D. Administer a 2-liter crystalloid bolus
CORRECT ANSWER: B. Perform an emergency department thoracotomy
Rationale: Immediate drainage of greater than 1500 mL of blood, or
persistent bleeding of 200 mL per hour for 3 consecutive hours, is an
indication for operative intervention. While this patient's initial output is
1200 mL, the persistent hypotension and mechanism suggest ongoing
intrathoracic hemorrhage. Emergency department thoracotomy is
indicated for penetrating thoracic trauma with hemodynamic instability.
Question 5: Which of the following signs is LEAST reliable for
confirming endotracheal intubation?
,A. Symmetrical chest wall movement
B. Presence of end-tidal CO2 by colorimetry
C. Bilateral breath sounds
D. Endotracheal tube tip above the carina on chest radiograph
CORRECT ANSWER: A. Symmetrical chest wall movement
Rationale: Symmetrical chest wall movement can be present even with
esophageal intubation if the stomach is being insufflated, or absent with
mainstem intubation. End-tidal CO2 detection is the gold standard for
confirming tracheal placement. Bilateral breath sounds and chest
radiograph confirmation are supportive but less reliable than capnography.
Chest wall movement is the least specific indicator.
Question 6: A patient with a tracheobronchial injury presents with a
persistent large pneumothorax despite a functioning chest tube. What
is the diagnostic study of choice?
A. Computed tomography of the chest
B. Bronchoscopy
C. Chest radiograph
D. Esophagogastroduodenoscopy
CORRECT ANSWER: B. Bronchoscopy
Rationale: Bronchoscopy is the definitive diagnostic procedure for
suspected tracheobronchial injury. It allows direct visualization of the
airway to identify the site and extent of injury. Persistent pneumothorax
despite a functioning chest tube should raise suspicion for this injury,
particularly in cases of rapid deceleration or penetrating trauma near the
carina.
Question 7: What is the definition of a massive hemothorax?
A. Greater than 500 mL of blood in the pleural space
B. Greater than 1000 mL of blood in the pleural space
C. Greater than 1500 mL of blood in the pleural space
D. Greater than 2000 mL of blood in the pleural space
CORRECT ANSWER: C. Greater than 1500 mL of blood in the pleural
space
, Rationale: A massive hemothorax is defined as greater than 1500 mL of
blood in the pleural space or the drainage of more than 1500 mL
immediately upon chest tube insertion. This volume represents a
significant hemorrhage that may require operative intervention. It can also
be defined as greater than one-third of the patient's blood volume.
Question 8: A 30-year-old male is stabbed in the left chest. He has a
wound at the fifth intercostal space in the midclavicular line. He is
hypotensive and has distended neck veins. Breath sounds are clear
bilaterally. What is the most appropriate immediate diagnostic step?
A. Chest radiograph
B. Focused Assessment with Sonography for Trauma (FAST)
C. Computed tomography of the chest
D. Electrocardiogram
CORRECT ANSWER: B. Focused Assessment with Sonography for
Trauma (FAST)
Rationale: The clinical presentation of a penetrating chest wound near the
cardiac border, hypotension, and distended neck veins is highly suspicious
for cardiac tamponade. A FAST examination can rapidly identify pericardial
fluid in the emergency department. This bedside ultrasound is faster than
CT and more sensitive than chest radiograph for detecting
hemopericardium.
Question 9: Which of the following is an indication for resuscitative
thoracotomy in a patient with traumatic cardiac arrest?
A. Blunt trauma with no signs of life in the field
B. Penetrating thoracic trauma with less than 15 minutes of CPR
C. Asystole as the presenting rhythm with no tamponade
D. Prolonged pulselessness greater than 30 minutes
CORRECT ANSWER: B. Penetrating thoracic trauma with less than 15
minutes of CPR
Rationale: Resuscitative thoracotomy is indicated for penetrating thoracic
trauma with less than 15 minutes of cardiopulmonary resuscitation.
Penetrating trauma, particularly with cardiac tamponade, has improved
survival rates with resuscitative thoracotomy. Blunt trauma with no signs of
Trauma Life Support 11th Edition, Thoracic Injury
Practice Questions & Answers, Trauma Exam Prep &
Comprehensive Review
Question 1: A 35-year-old male is brought to the emergency
department after a high-speed motor vehicle collision. He is anxious,
tachypneic, and has absent breath sounds on the right with
hyperresonance to percussion. His blood pressure is 80/50 mmHg, and
his trachea is deviated to the left. What is the most appropriate
immediate management?
A. Obtain an urgent portable chest radiograph
B. Perform immediate needle decompression
C. Administer a 2-liter bolus of crystalloid
D. Prepare for an emergency department thoracotomy
CORRECT ANSWER: B. Perform immediate needle decompression
Rationale: The clinical picture of hypotension, absent breath sounds,
hyperresonance, and tracheal deviation is classic for a tension
pneumothorax. This is a life-threatening condition that requires immediate
decompression without waiting for radiographic confirmation. Needle
decompression should be performed immediately, followed by tube
thoracostomy. A chest radiograph would only delay definitive treatment in
this unstable patient.
Question 2: A 28-year-old female is stabbed in the left chest. She is
hypotensive with distended neck veins and muffled heart sounds.
What is the most likely diagnosis?
A. Tension pneumothorax
B. Massive hemothorax
C. Cardiac tamponade
D. Open pneumothorax
CORRECT ANSWER: C. Cardiac tamponade
Rationale: The triad of hypotension, distended neck veins, and muffled
heart sounds constitutes Beck's triad, which is pathognomonic for cardiac
tamponade. Penetrating trauma to the chest can cause bleeding into the
pericardial sac, which restricts cardiac filling and leads to obstructive
shock. This requires urgent pericardial drainage.
,Question 3: A 45-year-old male is involved in a blunt trauma accident.
He has a flail chest segment and is becoming progressively hypoxic
despite high-flow oxygen. What is the most appropriate management?
A. External stabilization of the chest wall
B. Intercostal nerve blocks
C. Endotracheal intubation and mechanical ventilation
D. Intravenous sedation
CORRECT ANSWER: C. Endotracheal intubation and mechanical
ventilation
Rationale: A flail chest with progressive hypoxia despite supplemental
oxygen indicates respiratory failure due to inadequate ventilation and
underlying pulmonary contusion. Positive pressure ventilation provides
internal pneumatic stabilization of the flail segment, improves oxygenation,
and addresses the underlying respiratory failure. External stabilization and
nerve blocks are adjuncts but do not address the impending respiratory
failure.
Question 4: A 22-year-old male sustains a gunshot wound to the right
chest. A chest tube is inserted and returns 1200 mL of blood
immediately. He remains hypotensive. What is the most appropriate
next step?
A. Insert a second chest tube
B. Perform an emergency department thoracotomy
C. Obtain a CT scan of the chest
D. Administer a 2-liter crystalloid bolus
CORRECT ANSWER: B. Perform an emergency department thoracotomy
Rationale: Immediate drainage of greater than 1500 mL of blood, or
persistent bleeding of 200 mL per hour for 3 consecutive hours, is an
indication for operative intervention. While this patient's initial output is
1200 mL, the persistent hypotension and mechanism suggest ongoing
intrathoracic hemorrhage. Emergency department thoracotomy is
indicated for penetrating thoracic trauma with hemodynamic instability.
Question 5: Which of the following signs is LEAST reliable for
confirming endotracheal intubation?
,A. Symmetrical chest wall movement
B. Presence of end-tidal CO2 by colorimetry
C. Bilateral breath sounds
D. Endotracheal tube tip above the carina on chest radiograph
CORRECT ANSWER: A. Symmetrical chest wall movement
Rationale: Symmetrical chest wall movement can be present even with
esophageal intubation if the stomach is being insufflated, or absent with
mainstem intubation. End-tidal CO2 detection is the gold standard for
confirming tracheal placement. Bilateral breath sounds and chest
radiograph confirmation are supportive but less reliable than capnography.
Chest wall movement is the least specific indicator.
Question 6: A patient with a tracheobronchial injury presents with a
persistent large pneumothorax despite a functioning chest tube. What
is the diagnostic study of choice?
A. Computed tomography of the chest
B. Bronchoscopy
C. Chest radiograph
D. Esophagogastroduodenoscopy
CORRECT ANSWER: B. Bronchoscopy
Rationale: Bronchoscopy is the definitive diagnostic procedure for
suspected tracheobronchial injury. It allows direct visualization of the
airway to identify the site and extent of injury. Persistent pneumothorax
despite a functioning chest tube should raise suspicion for this injury,
particularly in cases of rapid deceleration or penetrating trauma near the
carina.
Question 7: What is the definition of a massive hemothorax?
A. Greater than 500 mL of blood in the pleural space
B. Greater than 1000 mL of blood in the pleural space
C. Greater than 1500 mL of blood in the pleural space
D. Greater than 2000 mL of blood in the pleural space
CORRECT ANSWER: C. Greater than 1500 mL of blood in the pleural
space
, Rationale: A massive hemothorax is defined as greater than 1500 mL of
blood in the pleural space or the drainage of more than 1500 mL
immediately upon chest tube insertion. This volume represents a
significant hemorrhage that may require operative intervention. It can also
be defined as greater than one-third of the patient's blood volume.
Question 8: A 30-year-old male is stabbed in the left chest. He has a
wound at the fifth intercostal space in the midclavicular line. He is
hypotensive and has distended neck veins. Breath sounds are clear
bilaterally. What is the most appropriate immediate diagnostic step?
A. Chest radiograph
B. Focused Assessment with Sonography for Trauma (FAST)
C. Computed tomography of the chest
D. Electrocardiogram
CORRECT ANSWER: B. Focused Assessment with Sonography for
Trauma (FAST)
Rationale: The clinical presentation of a penetrating chest wound near the
cardiac border, hypotension, and distended neck veins is highly suspicious
for cardiac tamponade. A FAST examination can rapidly identify pericardial
fluid in the emergency department. This bedside ultrasound is faster than
CT and more sensitive than chest radiograph for detecting
hemopericardium.
Question 9: Which of the following is an indication for resuscitative
thoracotomy in a patient with traumatic cardiac arrest?
A. Blunt trauma with no signs of life in the field
B. Penetrating thoracic trauma with less than 15 minutes of CPR
C. Asystole as the presenting rhythm with no tamponade
D. Prolonged pulselessness greater than 30 minutes
CORRECT ANSWER: B. Penetrating thoracic trauma with less than 15
minutes of CPR
Rationale: Resuscitative thoracotomy is indicated for penetrating thoracic
trauma with less than 15 minutes of cardiopulmonary resuscitation.
Penetrating trauma, particularly with cardiac tamponade, has improved
survival rates with resuscitative thoracotomy. Blunt trauma with no signs of
