CLINICAL MEDICINE

Detailed explanation-1: -In a cardiac stress test, an ST depression of at least 1 mm after adenosine administration indicates a reversible ischaemia, while an exercise stress test requires an ST depression of at least 2 mm to significantly indicate reversible ischaemia.

Detailed explanation-2: -The QT-interval is the time between the onset of ventricular depolarization and the end of ventricular repolarization. The ST-interval is the time between the end of the S-wave and the beginning of the T-wave [119].

Detailed explanation-3: -T waves represent ventricular repolarization (atrial repolarization is obscured by the large QRS complex).

Detailed explanation-4: -QT interval is the time from starting of the QRS wave to the end of the T wave. It represents one cycle of ventricular electrical activity from the start of ventricular depolarization to the end of ventricular repolarization.