silent ischemia


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Related to silent ischemia: silent myocardial ischemia

si·lent is·che·mi·a

myocardial ischemia without accompanying signs or symptoms of angina pectoris; can be detected by ECG and other lab techniques.
See also: silent myocardial infarction.

silent ischemia

Etymology: L, silere, to be silent
an asymptomatic form of myocardial ischemia that may damage the heart muscle. Ischemia is most likely to occur during the first 6 hours after a person awakens in the morning. It is triggered by mental arousal in more than 75% of patients. In contrast, cardiac ischemia accompanied by anginal pains is usually triggered by physical exertion.

si·lent is·che·mi·a

(sīlĕnt is-kēmē-ă)
Myocardial ischemia without accompanying signs or symptoms of angina pectoris; can be detected by electrocardiographic and laboratory techniques.
References in periodicals archive ?
Previous studies suggested that the prevalence of silent ischemia in hypertensive diabetic patients varied from about 15% to over 50%.
A new study implicates silent ischemia even more strongly than before, says Prakash C.
About half the patients had unstable angina, about 40% had stable angina, and the remainder had silent ischemia.
If studies confirm that suspicion, the implications may extend beyond silent ischemia.
Identifying coronary artery disease in these patients is difficult because many have no apparent "chest pain" symptoms; this so-called silent ischemia may go undiagnosed until symptoms of late-stage heart disease occur including heart attack or cardiac death.