In ECG, P-R interval corresponds to

In ECG P-R interval is prolonged due to

In ECG P-R interval is prolonged due to

Which among the following is the interval corresponding to the inequality -2ltxle3 .

In ECG, P-wave refers to

Assertion: ECG is a graphical representation of the electrical activity of the heart during a cardiac cycle. Reason: Each peak in the ECG is identified with the letter from P to Q that corresponds to electrical activity of the heart.

In ECG shortened Q-T interval indicates

In ECG shortened Q-T interval indicates

The ratio of the displacement vector to the corresponding time interval is