coronary spasm


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coronary spasm

Muscular closure of the coronary arteries, causing angina, ischemia, or myocardial infarction.
See: variant angina
See also: spasm
References in periodicals archive ?
Thyroid function tests should be routine in patients presenting with chest pain due to coronary spasm.
For example, the scientists don't know whether smoking provokes coronary spasm in men.
However, the study is strong enough to warn female smokers about the possible link to coronary spasm, Caralis adds.
11,12) Bitter orange has been identified as a cause of resistant hypertension, syncope, myocardial infarction, tachycardia and ventricular fibrillation, and exacerbated coronary spasm in tobacco smokers.
Although an underlying atheromatous plaque has not been excluded with absolute certainty in our patient, it seems very likely that use of a nutritional supplement containing synephrine, octopamine, tyramine and caffeine, combined with intravascular dehydration and impaired renal function, triggered coronary spasm and thrombosis of a major proximal coronary artery.
T[right arrow]786C mutation in the 5'-flanking region of the endothelial nitric oxide synthase gene is associated with coronary spasm.
However, if the coronary spasm is prolonged, it can lead to myocardial infarction, life-threatening ventricular arrhythmias, high-degree arteriovenous block or sudden death.
We also gave intracoronary nitroglycerine to rule out coronary spasm, with no change in the lesion.
Intravenous nitrate was given in high doses as tolerated and ST-segment changes were checked to rule out coronary spasm.
Other rheumatic disorders can also present with coronary vasculitis, which can lead to coronary spasms and/or thrombosis.