S-T segment

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S-T segment

The part of an electrocardiogram immediately following the QRS complex and merging into the T wave.

S-T segment,

an isoelectric line after the QRS complex on the electrocardiogram. It represents phase 2 of the cardiac action potential. Elevation or depression of the S-T segment is the hallmark of myocardial ischemia or injury and coronary artery disease.

S-T segment

the portion of an electrocardiogram between the end of the QRS complex and the beginning of the T wave. It represents the period of slow repolarization of the ventricles.

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