Images in cardiovascular medicine. Spontaneous echocardiographic wall motion abnormalities in variant angina.
نویسندگان
چکیده
Variant angina, defined as spontaneous angina pectoris associated with transient ST-segment elevation, is usually caused by episodic coronary spasm. At present, coronary artery spasm is a reversible coronary stenosis that limits coronary blood flow under resting conditions. Prinzmetal first described this type of angina pectoris as a distinct entity in 1959. Although several hypotheses have been suggested, the precise mechanism for coronary vasospastic disease remains unclear. Natural history of variant angina is heterogeneous. In
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ورودعنوان ژورنال:
- Circulation
دوره 118 1 شماره
صفحات -
تاریخ انتشار 2008