The electrocardiogram (ECG) is an important 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) may occur in other conditions, such as myocarditis. (See "Clinical manifestations and diagnosis of myocarditis in adults".)
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".)