ATLS POST TEST ASSESSMENT
QUESTIONS WITH VERIFIED ANSWERS
1. Which of the following is the definitive sign of a tension pneumothorax requiring
immediate needle decompression?
A. Hemodynamic collapse and hypotension
B. Tracheal deviation to the contralateral side
C. Absence of breath sounds on the affected side
D. Severe chest pain and dyspnea
Answer: A
Conceptual Explanation: While tracheal deviation and absent breath sounds are signs,
hemodynamic collapse/hypotension indicates immediate life-threatening obstructive
shock requiring urgent decompression.
2. What is the primary resuscitation fluid of choice for a hypotensive trauma patient?
A. 5% Dextrose in Water
B. Free water via nasogastric tube
C. Colloids such as hetastarch
D. Warm isotonic crystalloid solution
,Answer: D
Conceptual Explanation: Warm isotonic crystalloid (e.g., Ringer’s lactate or Normal
Saline) is the initial fluid of choice, though blood products should be initiated early in
hemorrhagic shock.
3. Which component of the lethal triad of trauma involves the impairment of coagulation
enzyme function?
A. Hypothermia
B. Acidosis
C. Coagulopathy
D. Hyperglycemia
Answer: B
Conceptual Explanation: Acidosis (low pH) directly impairs the enzymatic reactions of
the coagulation cascade, worsening bleeding.
4. What is the most common cause of shock in the trauma patient?
A. Cardiogenic shock
B. Neurogenic shock
C. Hemorrhagic shock
D. Septic shock
Answer: C
, Conceptual Explanation: Hemorrhagic shock is overwhelmingly the most common type of
shock encountered in trauma settings.
5. In managing a patient with a severe traumatic brain injury (TBI), what is the primary goal of
hyperventilation?
A. To increase arterial oxygen content
B. To prevent metabolic alkalosis
C. To reduce intracranial pressure via cerebral vasoconstriction
D. To reverse systemic hypotension
Answer: C
Conceptual Explanation: Hyperventilation causes hypocapnia, leading to cerebral
vasoconstriction, which rapidly reduces intracranial pressure (ICP) but risks ischemia if
prolonged.
6. What imaging modality is the gold standard for diagnosing cervical spine injury in an alert,
asymptomatic trauma patient?
A. No imaging is required if clinical criteria are met
B. Magnetic Resonance Imaging (MRI)
C. Computed Tomography (CT) scan
D. Plain radiography (c-spine series)
Answer: A
QUESTIONS WITH VERIFIED ANSWERS
1. Which of the following is the definitive sign of a tension pneumothorax requiring
immediate needle decompression?
A. Hemodynamic collapse and hypotension
B. Tracheal deviation to the contralateral side
C. Absence of breath sounds on the affected side
D. Severe chest pain and dyspnea
Answer: A
Conceptual Explanation: While tracheal deviation and absent breath sounds are signs,
hemodynamic collapse/hypotension indicates immediate life-threatening obstructive
shock requiring urgent decompression.
2. What is the primary resuscitation fluid of choice for a hypotensive trauma patient?
A. 5% Dextrose in Water
B. Free water via nasogastric tube
C. Colloids such as hetastarch
D. Warm isotonic crystalloid solution
,Answer: D
Conceptual Explanation: Warm isotonic crystalloid (e.g., Ringer’s lactate or Normal
Saline) is the initial fluid of choice, though blood products should be initiated early in
hemorrhagic shock.
3. Which component of the lethal triad of trauma involves the impairment of coagulation
enzyme function?
A. Hypothermia
B. Acidosis
C. Coagulopathy
D. Hyperglycemia
Answer: B
Conceptual Explanation: Acidosis (low pH) directly impairs the enzymatic reactions of
the coagulation cascade, worsening bleeding.
4. What is the most common cause of shock in the trauma patient?
A. Cardiogenic shock
B. Neurogenic shock
C. Hemorrhagic shock
D. Septic shock
Answer: C
, Conceptual Explanation: Hemorrhagic shock is overwhelmingly the most common type of
shock encountered in trauma settings.
5. In managing a patient with a severe traumatic brain injury (TBI), what is the primary goal of
hyperventilation?
A. To increase arterial oxygen content
B. To prevent metabolic alkalosis
C. To reduce intracranial pressure via cerebral vasoconstriction
D. To reverse systemic hypotension
Answer: C
Conceptual Explanation: Hyperventilation causes hypocapnia, leading to cerebral
vasoconstriction, which rapidly reduces intracranial pressure (ICP) but risks ischemia if
prolonged.
6. What imaging modality is the gold standard for diagnosing cervical spine injury in an alert,
asymptomatic trauma patient?
A. No imaging is required if clinical criteria are met
B. Magnetic Resonance Imaging (MRI)
C. Computed Tomography (CT) scan
D. Plain radiography (c-spine series)
Answer: A
