Check out today’s Step 1 Qmax Question Challenge.
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A 54-year-old woman presents to the emergency department because of severe pain between her shoulder blades of 6 minutes’ duration. She states that she vomited on the way to the hospital. Her hands are clammy and she appears very anxious. An ECG from triage is shown in the image. The patient is given a medication that rapidly relieves her pain.
What is the mechanism of action of this medication?
A. Increased activity of guanylyl cyclase, leading to increased cGMP
B. Inhibition of angiotensin-converting enzyme
C. Inhibition of ascending pain pathway by binding to opioid receptors
D. Inhibition of the Na+/K+ ATP pump
E. Inhibition of transmembrane influx of Ca2+ into myocardial cells
F. Suppression of prostaglandin and thromboxane production
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