, Question 1
During a mass-casualty incident, a patient with a penetrating chest wound and
paradoxical chest wall movement is triaged. Which intervention is the highest
priority according to current TCCC guidelines?
A. Apply a nonporous occlusive dressing to the wound.
B. Perform needle decompression on the affected side.
C. Administer high-flow oxygen via non-rebreather mask.
D. Position the patient in Trendelenburg to improve venous return.
Correct Answer: B - Perform needle decompression on the
affected side.
RATIONALE
Needle decompression is indicated for tension pneumothorax, which
can develop from a penetrating chest wound with paradoxical
movement (sucking chest wound). TCCC guidelines prioritize
decompression if signs of tension physiology are present. Occlusive
dressing alone may worsen tension if not followed by decompression.
Question 2
A patient presents with severe respiratory distress, absent breath sounds on the
right, and tracheal deviation to the left. Which pathophysiological mechanism
best explains these findings?
A. Right-sided hemothorax causing mediastinal shift.
B. Right-sided tension pneumothorax causing mediastinal shift.
C. Left-sided pneumothorax causing compression of the right lung.
D. Bilateral pneumothorax causing central tracheal deviation.
Correct Answer: B - Right-sided tension pneumothorax causing
mediastinal shift.
Page 2
, RATIONALE
Tension pneumothorax on the right causes air accumulation in the
pleural space, collapsing the right lung and pushing mediastinal
structures (including the trachea) to the left. Hemothorax typically
does not cause tracheal deviation unless massive and is less likely to
produce absent breath sounds unilaterally with tension physiology.
Question 3
Which of the following best describes the mechanism of action of nitroglycerin
in the context of acute coronary syndrome?
A. It increases heart rate and contractility to improve cardiac output.
B. It dilates coronary arteries and reduces preload, decreasing myocardial
oxygen demand.
C. It blocks calcium channels, reducing myocardial contractility.
D. It inhibits platelet aggregation, preventing further thrombus formation.
Correct Answer: B - It dilates coronary arteries and reduces
preload, decreasing myocardial oxygen demand.
RATIONALE
Nitroglycerin is a nitrate that primarily venodilates, reducing preload
and myocardial oxygen demand, and also dilates coronary arteries to
improve perfusion. It does not directly increase heart rate or
contractility, block calcium channels, or inhibit platelets.
Question 4
A patient with a known seizure disorder is postictal and has an SpO2 of 88%
on room air. Which sequence of airway management is most appropriate
according to current EMT-B protocols?
A. Insert an oropharyngeal airway (OPA) immediately, then administer
oxygen.
B. Suction the airway, position the patient laterally, and administer
oxygen via non-rebreather mask.
Page 3
, C. Perform endotracheal intubation and ventilate with a bag-valve-mask.
D. Administer naloxone and observe for improvement.
Correct Answer: B - Suction the airway, position the patient
laterally, and administer oxygen via non-rebreather mask.
RATIONALE
Postictal patients often have excessive secretions and are at risk for
aspiration. Suctioning, lateral positioning to maintain airway patency,
and oxygen administration are first-line EMT-B interventions. OPA is
contraindicated if a gag reflex is present, and intubation is out of
EMT-B scope.
Question 5
Which of the following findings is most indicative of neurogenic shock rather
than hypovolemic shock in a trauma patient?
A. Tachycardia with cool, clammy skin.
B. Bradycardia with warm, dry skin.
C. Narrow pulse pressure and delayed capillary refill.
D. Increased respiratory rate and anxiety.
Correct Answer: B - Bradycardia with warm, dry skin.
RATIONALE
Neurogenic shock results from loss of sympathetic tone, leading to
bradycardia, vasodilation, and warm, dry skin. Hypovolemic shock
typically presents with tachycardia, cool clammy skin, and narrow
pulse pressure due to compensatory mechanisms.
Question 6
A patient with a suspected opioid overdose presents with pinpoint pupils,
respiratory depression, and unresponsiveness. After administering naloxone,
which parameter should be monitored most closely to guide further dosing?
A. Blood pressure
Page 4
During a mass-casualty incident, a patient with a penetrating chest wound and
paradoxical chest wall movement is triaged. Which intervention is the highest
priority according to current TCCC guidelines?
A. Apply a nonporous occlusive dressing to the wound.
B. Perform needle decompression on the affected side.
C. Administer high-flow oxygen via non-rebreather mask.
D. Position the patient in Trendelenburg to improve venous return.
Correct Answer: B - Perform needle decompression on the
affected side.
RATIONALE
Needle decompression is indicated for tension pneumothorax, which
can develop from a penetrating chest wound with paradoxical
movement (sucking chest wound). TCCC guidelines prioritize
decompression if signs of tension physiology are present. Occlusive
dressing alone may worsen tension if not followed by decompression.
Question 2
A patient presents with severe respiratory distress, absent breath sounds on the
right, and tracheal deviation to the left. Which pathophysiological mechanism
best explains these findings?
A. Right-sided hemothorax causing mediastinal shift.
B. Right-sided tension pneumothorax causing mediastinal shift.
C. Left-sided pneumothorax causing compression of the right lung.
D. Bilateral pneumothorax causing central tracheal deviation.
Correct Answer: B - Right-sided tension pneumothorax causing
mediastinal shift.
Page 2
, RATIONALE
Tension pneumothorax on the right causes air accumulation in the
pleural space, collapsing the right lung and pushing mediastinal
structures (including the trachea) to the left. Hemothorax typically
does not cause tracheal deviation unless massive and is less likely to
produce absent breath sounds unilaterally with tension physiology.
Question 3
Which of the following best describes the mechanism of action of nitroglycerin
in the context of acute coronary syndrome?
A. It increases heart rate and contractility to improve cardiac output.
B. It dilates coronary arteries and reduces preload, decreasing myocardial
oxygen demand.
C. It blocks calcium channels, reducing myocardial contractility.
D. It inhibits platelet aggregation, preventing further thrombus formation.
Correct Answer: B - It dilates coronary arteries and reduces
preload, decreasing myocardial oxygen demand.
RATIONALE
Nitroglycerin is a nitrate that primarily venodilates, reducing preload
and myocardial oxygen demand, and also dilates coronary arteries to
improve perfusion. It does not directly increase heart rate or
contractility, block calcium channels, or inhibit platelets.
Question 4
A patient with a known seizure disorder is postictal and has an SpO2 of 88%
on room air. Which sequence of airway management is most appropriate
according to current EMT-B protocols?
A. Insert an oropharyngeal airway (OPA) immediately, then administer
oxygen.
B. Suction the airway, position the patient laterally, and administer
oxygen via non-rebreather mask.
Page 3
, C. Perform endotracheal intubation and ventilate with a bag-valve-mask.
D. Administer naloxone and observe for improvement.
Correct Answer: B - Suction the airway, position the patient
laterally, and administer oxygen via non-rebreather mask.
RATIONALE
Postictal patients often have excessive secretions and are at risk for
aspiration. Suctioning, lateral positioning to maintain airway patency,
and oxygen administration are first-line EMT-B interventions. OPA is
contraindicated if a gag reflex is present, and intubation is out of
EMT-B scope.
Question 5
Which of the following findings is most indicative of neurogenic shock rather
than hypovolemic shock in a trauma patient?
A. Tachycardia with cool, clammy skin.
B. Bradycardia with warm, dry skin.
C. Narrow pulse pressure and delayed capillary refill.
D. Increased respiratory rate and anxiety.
Correct Answer: B - Bradycardia with warm, dry skin.
RATIONALE
Neurogenic shock results from loss of sympathetic tone, leading to
bradycardia, vasodilation, and warm, dry skin. Hypovolemic shock
typically presents with tachycardia, cool clammy skin, and narrow
pulse pressure due to compensatory mechanisms.
Question 6
A patient with a suspected opioid overdose presents with pinpoint pupils,
respiratory depression, and unresponsiveness. After administering naloxone,
which parameter should be monitored most closely to guide further dosing?
A. Blood pressure
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