, Question 1
A patient struck by a vehicle exhibits paradoxical chest wall movement and
severe respiratory distress. Which pathophysiological mechanism BEST
explains the immediate life threat?
A. Tension pneumothorax causing mediastinal shift and decreased venous
return
B. Flail chest creating inefficient ventilation due to loss of chest wall
integrity
C. Pulmonary contusion leading to alveolar hemorrhage and impaired gas
exchange
D. Open pneumothorax causing atmospheric air entrainment and lung
collapse
Correct Answer: B - Flail chest creating inefficient ventilation due
to loss of chest wall integrity
RATIONALE
Paradoxical chest wall movement is the hallmark of flail chest, where
multiple rib fractures create a free-floating segment that moves
opposite to normal respiration, severely impairing ventilation. While
tension pneumothorax and pulmonary contusion may coexist, the
specific finding of paradoxical movement directly indicates flail chest
as the primary mechanical life threat.
Question 2
Which assessment finding MOST specifically differentiates an ischemic stroke
from a hemorrhagic stroke in the prehospital setting?
A. Sudden onset of severe headache with vomiting
B. Unilateral facial droop and arm drift
C. Blood glucose level greater than 400 mg/dL
D. History of atrial fibrillation
Correct Answer: A - Sudden onset of severe headache with
Page 2
,vomiting
RATIONALE
Sudden severe headache with vomiting is a classic presentation of
hemorrhagic stroke due to increased intracranial pressure, whereas
ischemic strokes typically present with focal deficits without
headache. Facial droop and arm drift are non-specific and can occur in
both. Hyperglycemia and atrial fibrillation are risk factors but do not
differentiate stroke type.
Question 3
A patient with a known history of COPD presents with increased work of
breathing, pursed-lip breathing, and SpO2 of 82%. Which intervention is
MOST appropriate according to current evidence-based guidelines?
A. Administer high-flow oxygen via non-rebreather to achieve SpO2 of
100%
B. Titrate oxygen to maintain SpO2 between 88% and 92%
C. Withhold oxygen due to risk of hypoxic drive suppression
D. Administer albuterol via nebulizer without supplemental oxygen
Correct Answer: B - Titrate oxygen to maintain SpO2 between
88% and 92%
RATIONALE
Current guidelines recommend titrating oxygen to 88-92% in COPD
patients to avoid hyperoxia-induced hypercapnia and oxygen toxicity
while correcting hypoxemia. High-flow oxygen targeting 100% is
harmful. Withholding oxygen is dangerous. Albuterol without oxygen
does not address hypoxemia.
Question 4
A patient with a suspected cervical spine injury requires airway management.
Which technique BEST minimizes spinal movement while ensuring adequate
ventilation?
Page 3
, A. Head-tilt chin-lift with manual in-line stabilization
B. Jaw-thrust maneuver with manual in-line stabilization
C. Oropharyngeal airway insertion with neck extension
D. Nasopharyngeal airway insertion with head rotation
Correct Answer: B - Jaw-thrust maneuver with manual in-line
stabilization
RATIONALE
The jaw-thrust maneuver with manual in-line stabilization maintains
neutral cervical spine alignment while opening the airway, making it
the preferred technique for suspected spinal injury. Head-tilt chin-lift
and neck extension cause spinal movement. Nasopharyngeal airway
insertion does not require head rotation.
Question 5
A patient with a history of adrenal insufficiency presents with profound
weakness, hypotension, and hypoglycemia. Which pathophysiological
mechanism BEST explains this presentation?
A. Excessive cortisol production leading to hyperglycemia and
hypertension
B. Deficiency of mineralocorticoids and glucocorticoids causing vascular
collapse and hypoglycemia
C. Excess aldosterone causing sodium retention and potassium loss
D. Autoimmune destruction of pancreatic beta cells causing insulin
deficiency
Correct Answer: B - Deficiency of mineralocorticoids and
glucocorticoids causing vascular collapse and hypoglycemia
Page 4
A patient struck by a vehicle exhibits paradoxical chest wall movement and
severe respiratory distress. Which pathophysiological mechanism BEST
explains the immediate life threat?
A. Tension pneumothorax causing mediastinal shift and decreased venous
return
B. Flail chest creating inefficient ventilation due to loss of chest wall
integrity
C. Pulmonary contusion leading to alveolar hemorrhage and impaired gas
exchange
D. Open pneumothorax causing atmospheric air entrainment and lung
collapse
Correct Answer: B - Flail chest creating inefficient ventilation due
to loss of chest wall integrity
RATIONALE
Paradoxical chest wall movement is the hallmark of flail chest, where
multiple rib fractures create a free-floating segment that moves
opposite to normal respiration, severely impairing ventilation. While
tension pneumothorax and pulmonary contusion may coexist, the
specific finding of paradoxical movement directly indicates flail chest
as the primary mechanical life threat.
Question 2
Which assessment finding MOST specifically differentiates an ischemic stroke
from a hemorrhagic stroke in the prehospital setting?
A. Sudden onset of severe headache with vomiting
B. Unilateral facial droop and arm drift
C. Blood glucose level greater than 400 mg/dL
D. History of atrial fibrillation
Correct Answer: A - Sudden onset of severe headache with
Page 2
,vomiting
RATIONALE
Sudden severe headache with vomiting is a classic presentation of
hemorrhagic stroke due to increased intracranial pressure, whereas
ischemic strokes typically present with focal deficits without
headache. Facial droop and arm drift are non-specific and can occur in
both. Hyperglycemia and atrial fibrillation are risk factors but do not
differentiate stroke type.
Question 3
A patient with a known history of COPD presents with increased work of
breathing, pursed-lip breathing, and SpO2 of 82%. Which intervention is
MOST appropriate according to current evidence-based guidelines?
A. Administer high-flow oxygen via non-rebreather to achieve SpO2 of
100%
B. Titrate oxygen to maintain SpO2 between 88% and 92%
C. Withhold oxygen due to risk of hypoxic drive suppression
D. Administer albuterol via nebulizer without supplemental oxygen
Correct Answer: B - Titrate oxygen to maintain SpO2 between
88% and 92%
RATIONALE
Current guidelines recommend titrating oxygen to 88-92% in COPD
patients to avoid hyperoxia-induced hypercapnia and oxygen toxicity
while correcting hypoxemia. High-flow oxygen targeting 100% is
harmful. Withholding oxygen is dangerous. Albuterol without oxygen
does not address hypoxemia.
Question 4
A patient with a suspected cervical spine injury requires airway management.
Which technique BEST minimizes spinal movement while ensuring adequate
ventilation?
Page 3
, A. Head-tilt chin-lift with manual in-line stabilization
B. Jaw-thrust maneuver with manual in-line stabilization
C. Oropharyngeal airway insertion with neck extension
D. Nasopharyngeal airway insertion with head rotation
Correct Answer: B - Jaw-thrust maneuver with manual in-line
stabilization
RATIONALE
The jaw-thrust maneuver with manual in-line stabilization maintains
neutral cervical spine alignment while opening the airway, making it
the preferred technique for suspected spinal injury. Head-tilt chin-lift
and neck extension cause spinal movement. Nasopharyngeal airway
insertion does not require head rotation.
Question 5
A patient with a history of adrenal insufficiency presents with profound
weakness, hypotension, and hypoglycemia. Which pathophysiological
mechanism BEST explains this presentation?
A. Excessive cortisol production leading to hyperglycemia and
hypertension
B. Deficiency of mineralocorticoids and glucocorticoids causing vascular
collapse and hypoglycemia
C. Excess aldosterone causing sodium retention and potassium loss
D. Autoimmune destruction of pancreatic beta cells causing insulin
deficiency
Correct Answer: B - Deficiency of mineralocorticoids and
glucocorticoids causing vascular collapse and hypoglycemia
Page 4
