coronary artery spasm


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coronary artery spasm

Intermittent constriction of the large coronary arteries. This may lead to angina pectoris in various conditions and is not necessarily associated with exertion.
See: variant angina
See also: spasm
References in periodicals archive ?
Type 2 variant includes patients with culprit, but quiescent, pre-existing atheromatous lesions, in whom the acute release of inflammatory mediators can induce either coronary artery spasm with normal cardiac enzymes and troponins or plaque erosion or rupture manifesting as acute myocardial infarction.
ST-elevation myocardial infarction secondary to coronary artery spasm provoked by food.
3-year followup of patients with coronary artery spasm as cause of acute coronary syndrome: the CASPAR (coronary artery spasm in patients with acute coronary syndrome) study follow-up.
If doctors don't find narrowed arteries or blockages associated with coronary artery disease, a coronary artery spasm is suspected.
4) Several hypothesis have been proposed for the mechanism of thyroid hormone and coronary artery spasm.
However, coronary artery spasm followed by thrombus formation is considered the most likely pathophysiologic mechanism.
It is important to note that assuming you do not have coronary artery spasm, the prognosis for people without major blockages on the angiogram is generally quite good.
Coronary artery spasm is typically a transient and marked narrowing of a single coronary artery lumen that induces myocardial ischemia.
During allergic episodes, chemical agents such as histamine, leukotrienes, and neutral proteases are increased in the peripheral circulation, and hence, these agents may cause coronary artery spasm (CAS) and atheromatous plaque rupture.
Type I variant includes patients with normal coronary arteries and Type II variant includes patients with culprit but quiescent pre-existing atheromatous disease where the acute release of inflammatory mediators can induce coronary artery spasm with normal or elevated cardiac enzymes and troponins (3-5).

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