,COMSAE PHASE 3 / COMLEX LEVEL 3 STYLE PRACTICE
TEST BANK
250 High-Yield Clinical Decision-Making Questions with
Answers & Detailed Rationales
Written to the Exact NBOME/COMLEX-USA Level 3 Blueprint
EXAM OVERVIEW
Feature Detail
Total Items 250 questions (5 sections of 50 each)
Format Single-best-answer multiple-choice, clinical vignettes
Focus Clinical decision-making, diagnosis, management, patient care,
Blueprint 7 Competency Domains (Dimension 1) and 2)
SECTION I: EMERGENCY MEDICINE (Questions 1–30)
Question 1
A 58-year-old man with a history of hypertension and type 2 diabetes presents with
sudden onset of severe chest pain radiating to his back. The pain is described as
"tearing" in quality. On examination, his blood pressure is 190/110 mmHg in the right
arm and 100/70 mmHg in the left arm. Which of the following is the most appropriate
,initial imaging study?
A. Chest X-ray
B. CT angiography of the chest
C. Transthoracic echocardiogram
D. MRI of the chest
Correct Answer: B
Rationale: This patient presents with classic findings of an aortic dissection: sudden,
severe "tearing" chest pain radiating to the back, with a significant blood pressure
differential between arms (≥20 mmHg). CT angiography of the chest is the most
sensitive and specific imaging modality for diagnosing aortic dissection. Chest X-ray (A)
may show a widened mediastinum but is not diagnostic. Echocardiogram (C) can be
helpful but is less sensitive than CT angiography. MRI (D) is not typically used in the
acute setting.
Question 2
A 45-year-old woman with no significant medical history presents with palpitations,
lightheadedness, and a sensation of "fluttering" in her chest. ECG shows a regular,
narrow-complex tachycardia at 180 bpm with no visible P waves. She is
hemodynamically stable. Which of the following is the most appropriate initial
management?
A. Immediate synchronized cardioversion
B. Adenosine 6 mg IV rapid push
C. Amiodarone 150 mg IV over 10 minutes
D. Vagal maneuvers
Correct Answer: D
Rationale: This patient has a regular, narrow-complex tachycardia consistent with
supraventricular tachycardia (SVT). In hemodynamically stable patients, vagal maneuvers
(e.g., carotid sinus massage, Valsalva maneuver) are the first-line intervention.
Adenosine (B) is the next step if vagal maneuvers fail. Cardioversion (A) is indicated for
unstable patients. Amiodarone (C) is not first-line for SVT.
Question 3
A 34-year-old man presents with acute-onset, severe, "worst headache of my life,"
, nausea, vomiting, and photophobia. On examination, he has nuchal rigidity. What is the
most appropriate next step?
A. CT head without contrast
B. Lumbar puncture
C. MRI brain
D. CT head with contrast
Correct Answer: A
Rationale: This patient's presentation is classic for subarachnoid hemorrhage (SAH):
sudden-onset "thunderclap" headache with meningismus. Non-contrast CT head is the
initial imaging study of choice for suspected SAH, with sensitivity >95% within 24 hours
of symptom onset. Lumbar puncture (B) is performed if CT is negative but clinical
suspicion remains high. MRI (C) is not the initial study. Contrast-enhanced CT (D) is not
as sensitive for acute subarachnoid blood.
Question 4
A 28-year-old woman with a history of asthma presents with acute shortness of breath,
wheezing, and cough. She reports using her albuterol inhaler every 2 hours with minimal
relief. Her respiratory rate is 28/min, heart rate 110 bpm, and oxygen saturation 89% on
room air. On examination, she has diminished breath sounds with minimal wheezing.
What is the most appropriate next step in management?
A. Increase albuterol nebulizer frequency
B. Immediate intubation and mechanical ventilation
C. Administer systemic corticosteroids
D. Heliox therapy
Correct Answer: B
Rationale: This patient has a severe asthma exacerbation with impending respiratory
failure. The "silent chest" (diminished breath sounds with minimal wheezing) in the
setting of hypoxemia, tachycardia, and tachypnea indicates severe obstruction and
fatigue. Immediate intubation is indicated to secure the airway and provide ventilatory
support. While nebulized albuterol (A) and systemic corticosteroids (C) are appropriate,
they will not address the immediate need for airway protection. Heliox (D) is a
temporizing measure but does not replace the need for intubation in this scenario.
TEST BANK
250 High-Yield Clinical Decision-Making Questions with
Answers & Detailed Rationales
Written to the Exact NBOME/COMLEX-USA Level 3 Blueprint
EXAM OVERVIEW
Feature Detail
Total Items 250 questions (5 sections of 50 each)
Format Single-best-answer multiple-choice, clinical vignettes
Focus Clinical decision-making, diagnosis, management, patient care,
Blueprint 7 Competency Domains (Dimension 1) and 2)
SECTION I: EMERGENCY MEDICINE (Questions 1–30)
Question 1
A 58-year-old man with a history of hypertension and type 2 diabetes presents with
sudden onset of severe chest pain radiating to his back. The pain is described as
"tearing" in quality. On examination, his blood pressure is 190/110 mmHg in the right
arm and 100/70 mmHg in the left arm. Which of the following is the most appropriate
,initial imaging study?
A. Chest X-ray
B. CT angiography of the chest
C. Transthoracic echocardiogram
D. MRI of the chest
Correct Answer: B
Rationale: This patient presents with classic findings of an aortic dissection: sudden,
severe "tearing" chest pain radiating to the back, with a significant blood pressure
differential between arms (≥20 mmHg). CT angiography of the chest is the most
sensitive and specific imaging modality for diagnosing aortic dissection. Chest X-ray (A)
may show a widened mediastinum but is not diagnostic. Echocardiogram (C) can be
helpful but is less sensitive than CT angiography. MRI (D) is not typically used in the
acute setting.
Question 2
A 45-year-old woman with no significant medical history presents with palpitations,
lightheadedness, and a sensation of "fluttering" in her chest. ECG shows a regular,
narrow-complex tachycardia at 180 bpm with no visible P waves. She is
hemodynamically stable. Which of the following is the most appropriate initial
management?
A. Immediate synchronized cardioversion
B. Adenosine 6 mg IV rapid push
C. Amiodarone 150 mg IV over 10 minutes
D. Vagal maneuvers
Correct Answer: D
Rationale: This patient has a regular, narrow-complex tachycardia consistent with
supraventricular tachycardia (SVT). In hemodynamically stable patients, vagal maneuvers
(e.g., carotid sinus massage, Valsalva maneuver) are the first-line intervention.
Adenosine (B) is the next step if vagal maneuvers fail. Cardioversion (A) is indicated for
unstable patients. Amiodarone (C) is not first-line for SVT.
Question 3
A 34-year-old man presents with acute-onset, severe, "worst headache of my life,"
, nausea, vomiting, and photophobia. On examination, he has nuchal rigidity. What is the
most appropriate next step?
A. CT head without contrast
B. Lumbar puncture
C. MRI brain
D. CT head with contrast
Correct Answer: A
Rationale: This patient's presentation is classic for subarachnoid hemorrhage (SAH):
sudden-onset "thunderclap" headache with meningismus. Non-contrast CT head is the
initial imaging study of choice for suspected SAH, with sensitivity >95% within 24 hours
of symptom onset. Lumbar puncture (B) is performed if CT is negative but clinical
suspicion remains high. MRI (C) is not the initial study. Contrast-enhanced CT (D) is not
as sensitive for acute subarachnoid blood.
Question 4
A 28-year-old woman with a history of asthma presents with acute shortness of breath,
wheezing, and cough. She reports using her albuterol inhaler every 2 hours with minimal
relief. Her respiratory rate is 28/min, heart rate 110 bpm, and oxygen saturation 89% on
room air. On examination, she has diminished breath sounds with minimal wheezing.
What is the most appropriate next step in management?
A. Increase albuterol nebulizer frequency
B. Immediate intubation and mechanical ventilation
C. Administer systemic corticosteroids
D. Heliox therapy
Correct Answer: B
Rationale: This patient has a severe asthma exacerbation with impending respiratory
failure. The "silent chest" (diminished breath sounds with minimal wheezing) in the
setting of hypoxemia, tachycardia, and tachypnea indicates severe obstruction and
fatigue. Immediate intubation is indicated to secure the airway and provide ventilatory
support. While nebulized albuterol (A) and systemic corticosteroids (C) are appropriate,
they will not address the immediate need for airway protection. Heliox (D) is a
temporizing measure but does not replace the need for intubation in this scenario.
