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Electrocardiogram in the diagnosis of myocardial ischemia and infarction

Ary L Goldberger, MD
Jordan M Prutkin, MD, MHS, FHRS
Section Editors
Freek Verheugt, MD, FACC, FESC
David M Mirvis, MD
Deputy Editor
Gordon M Saperia, MD, FACC


The electrocardiogram (ECG) is an essential diagnostic test for patients with possible or established myocardial ischemia or infarction. Abnormalities are manifest in the ST-segment, T wave, and QRS complex. However, the ECG may be normal or nonspecific in these patients.

In addition, findings thought typical of acute myocardial infarction (MI) due to atherosclerosis may occur in other conditions, such as myocarditis. (See "Clinical manifestations and diagnosis of myocarditis in adults" and "Clinical manifestations and diagnosis of stress (takotsubo) cardiomyopathy".)

The use of the ECG in patients with suspected or proven myocardial ischemia or MI will be reviewed here. Other relevant topics include:

(See "ECG tutorial: Myocardial ischemia and infarction".)

(See "Electrocardiogram in the prognosis of myocardial infarction or unstable angina".)

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Literature review current through: Sep 2017. | This topic last updated: May 17, 2016.
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