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A 45-year-old man with dyslipidemia had a sudden onset of retrosternal chest pain and presented to the emergency department. Findings on the physical examination were unremarkable. His electrocardiogram showed ST-segment elevation in the anterior leads (Panel A). Coronary angiography was immediately performed. The left anterior descending (LAD) coronary artery and two large diagonal branches appeared to be normal during diastole (Panel B) but were severely compressed during systole (Panel C), suggesting compression by myocardial bridging. A rate of flow classified as grade 2 (according to the criteria of the Thrombolysis in Myocardial Infarction [TIMI] trial) was observed in these three . . . [Full Text of this Article] |
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