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A case of acute myocardial infarction due to coronary spasm in the myocardial bridge

A case of acute myocardial infarction due to coronary spasm in the myocardial bridge

Journal of Invasive Cardiology 20(7): E217-E219

A 68-year-old Japanese man with acute inferior myocardial infarction underwent emergent coronary angiography which showed a myocardial bridge, but no coronary stenosis, at the infarctrelated artery. A spasm provocation test using intracoronary acetylcholine revealed a total occlusion due to severe spasm at the site of the myocardial bridge. Thus, the myocardial ischemia in this case was caused by the coronary spasm, but not by the limited flow due to the myocardial bridge. Although a beta-blocker is usually the appropriate drug, it should be avoided for coronary spasm. The spasm provocation test is useful to determine the type of medication needed for treatment.

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Accession: 051086092

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PMID: 18599907

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