Background. Although there have been many studies on the risk factors for coronary artery disease, the etiology of coronary artery spasm has not yet been determined.Methods and Results. After diagnosis by coronary arteriography, various risk factors were compared between two groups of subjects using logistic regression analysis. The vasospasm group included 175

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Persistent intercoronary and intracoronary communications were observed on cineangiograms in four patients having vasospastic angina without significant coronary narrowings. On provocation of coronary spasm using ergonovine maleate, these communications seemed to protect myocardium from ischemia, at least partially.

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Brain surface i皿aging by the multi ang ' le surface anatomy scanni 皿g