ESTUDYR
Clinical Medicine Final Exam Simulator Advanced Case-
Based Clinical Reasoning and Management
Question 1
A 64-year-old man presents to the emergency department with severe substernal chest pain
radiating to his left arm and jaw that began 45 minutes ago while climbing stairs. He is
diaphoretic and nauseated. His ECG shows ST-segment elevations in leads II, III, and aVF.
Which coronary artery is most likely occluded?
A. Left anterior descending artery
B. Left circumflex artery
C. Posterior descending artery
D. Right coronary artery
Correct Answer: D. Right coronary artery
Rationale:
ST elevation in leads II, III, and aVF indicates an inferior wall myocardial infarction. The right
coronary artery supplies the inferior portion of the heart in most individuals.
Question 2
A 72-year-old woman presents with fatigue, dizziness, and syncope. Her ECG reveals a heart
rate of 32 beats per minute with no consistent relationship between P waves and QRS complexes.
What is the most likely diagnosis?
A. First-degree AV block
B. Second-degree AV block
C. Atrial fibrillation
D. Third-degree AV block
Correct Answer: D. Third-degree AV block
Rationale:
Complete AV dissociation occurs in third-degree AV block, causing severe bradycardia and
syncope.
, ESTUDYR
Question 3
A patient with chronic hypertension develops left ventricular hypertrophy. What is the primary
physiologic reason for this adaptation?
A. Decreased cardiac output
B. Increased oxygen delivery
C. Reduced preload
D. Increased afterload requiring increased muscle mass
Correct Answer: D. Increased afterload requiring increased muscle mass
Rationale:
Hypertension increases resistance against which the heart must pump, causing hypertrophy.
Question 4
A patient presents with sudden tearing chest pain radiating to the back and unequal blood
pressures in both arms. What is the most likely diagnosis?
A. Myocardial infarction
B. Pulmonary embolism
C. Pericarditis
D. Aortic dissection
Correct Answer: D. Aortic dissection
Rationale:
Classic presentation includes tearing chest pain and unequal arm blood pressures.
Question 5
Which laboratory marker rises earliest after myocardial infarction?
A. Troponin
B. CK-MB
C. Myoglobin
D. LDH
Correct Answer: C. Myoglobin
Clinical Medicine Final Exam Simulator Advanced Case-
Based Clinical Reasoning and Management
Question 1
A 64-year-old man presents to the emergency department with severe substernal chest pain
radiating to his left arm and jaw that began 45 minutes ago while climbing stairs. He is
diaphoretic and nauseated. His ECG shows ST-segment elevations in leads II, III, and aVF.
Which coronary artery is most likely occluded?
A. Left anterior descending artery
B. Left circumflex artery
C. Posterior descending artery
D. Right coronary artery
Correct Answer: D. Right coronary artery
Rationale:
ST elevation in leads II, III, and aVF indicates an inferior wall myocardial infarction. The right
coronary artery supplies the inferior portion of the heart in most individuals.
Question 2
A 72-year-old woman presents with fatigue, dizziness, and syncope. Her ECG reveals a heart
rate of 32 beats per minute with no consistent relationship between P waves and QRS complexes.
What is the most likely diagnosis?
A. First-degree AV block
B. Second-degree AV block
C. Atrial fibrillation
D. Third-degree AV block
Correct Answer: D. Third-degree AV block
Rationale:
Complete AV dissociation occurs in third-degree AV block, causing severe bradycardia and
syncope.
, ESTUDYR
Question 3
A patient with chronic hypertension develops left ventricular hypertrophy. What is the primary
physiologic reason for this adaptation?
A. Decreased cardiac output
B. Increased oxygen delivery
C. Reduced preload
D. Increased afterload requiring increased muscle mass
Correct Answer: D. Increased afterload requiring increased muscle mass
Rationale:
Hypertension increases resistance against which the heart must pump, causing hypertrophy.
Question 4
A patient presents with sudden tearing chest pain radiating to the back and unequal blood
pressures in both arms. What is the most likely diagnosis?
A. Myocardial infarction
B. Pulmonary embolism
C. Pericarditis
D. Aortic dissection
Correct Answer: D. Aortic dissection
Rationale:
Classic presentation includes tearing chest pain and unequal arm blood pressures.
Question 5
Which laboratory marker rises earliest after myocardial infarction?
A. Troponin
B. CK-MB
C. Myoglobin
D. LDH
Correct Answer: C. Myoglobin
