ANATOMY

Detailed explanation-1: -The QRS complex represents the depolarization of ventricles. It shows the beginning of systole and ventricular contraction. The QRS complex or wave starts with a small deflection downwards, represented by the point Q. It follows the P wave.

Detailed explanation-2: -The three waves of the QRS complex represent ventricular depolarization.

Detailed explanation-3: -Ventricular depolarization and activation is represented by the QRS complex, whereas ventricular repolarization (VR) is expressed as the interval from the beginning of the QRS complex to the end of the T wave (QT interval).

Detailed explanation-4: -QRS Complex: The QRS complex is the ventricular contraction (systole) consisting of the Q wave, which is the first negative deviation, followed by the R wave, a positive (upward) deviation. Any negative deflection following immediately after the R portion is termed the S wave.

Detailed explanation-5: -A combination of the Q wave, R wave and S wave, the “QRS complex” represents ventricular depolarization.