United States Medical Licensing Exam USMLE Exam Questions
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A 58-year-old man presents with chest pain radiating to his left arm. An ECG shows ST-segment elevation in leads II, III, and aVF. Which coronary artery is most likely occluded?
Correct Answer: B
A patient with hypertension is prescribed lisinopril. Which mechanism best explains how this medication lowers blood pressure?
Correct Answer: C
A 72-year-old woman suddenly develops weakness of the right arm and leg, along with difficulty speaking. Symptoms began 45 minutes ago. What is the most appropriate initial diagnostic imaging study?
Correct Answer: B
A 24-year-old woman presents with weight loss, heat intolerance, palpitations, and a fine hand tremor. Laboratory testing reveals low TSH and elevated free T4. What is the most likely diagnosis?