Why are R waves Figure used to determine heart rate rather t

Why are R waves (Figure) used to determine heart rate rather than T waves?

Solution

R wave:

Mainly its represents first upwards deflection after P wave,

Easiest wave form for detremaing the heart function R wave minaly represents the part of VENTRICULAR DEPOLARIZATION , its mainly enlarge with ventricular hypertrophy

T wave;

Represents the repolarization of the ventricles, this T wave inverted or flat in the condition of the mycordial ischemic and bundle branch block

after ventriculr depolarisition the total heart rhytham will be completed so because R wave heart rate will be determains