Wisconsin Medical Journal 2002
Myocardial infarction temporally related to ephedra--a possible role for the coronary microcirculation.
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Myocardial infarction has been reported with ephedrine and pseudoephedrine use. It has been suggested that these agents may induce coronary artery spasm, hypercoagulable states, or oxygen demand imbalance. We report a 25-year-old male with myocardial infarction after receiving a diet pill containing ephedra. Coronary angiography revealed normal coronary arteries with very slow flow, suggestive of microcirculation abnormalities. The flow responded promptly to intracoronary verapamil.