T wave alternans refers to the variation of the T wave amplitude on an ECG on a beat-to-beat basis. Having significant T wave alternans is thought to increase the risk of ventricular arrhythmias ...

This ECG is challenging. The rhythm starts as normal ... There is no identifiable Q wave or QS in lead V6 which would have favored VT. The is no wide R wave that is 40 ms or greater in V1 or ...

VPDs with very short coupling intervals developing during an acute stage of myocardial infarction would predict the ...