USMLE Step 1 - Question 12

A 48 year old male with a history of hypertension and high cholesterol presents to the emergency department with chest pains for 60 minutes. He describes a substernal chest pressure “like an elephant on my chest” associated with shortness of breath and diaphoresis. His ECG shows ST elevations consistent with myocardial infarction. Which of the following laboratory results would be expected?

A. Elevated myoglobin, elevated troponin I, and elevated CK-MB

B. Normal myoglobin, elevated troponin I, and normal CK-MB

C. Elevated myoglobin, normal troponin I, and normal CK-MB

D. Normal myoglobin, normal troponin I, and elevated CK-MB

E. Normal myoglobin, normal troponin I, and normal CK-MB

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