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In a standard ECG, which one of the following alphabets is the correct representation of the respective activity of the human heart?

  • R-repolarisation of ventricles

  • S- start of systole

  • T -end of diastole

  • P- depolarization of the atria

Answer

D.

P- depolarization of the atria

In ECG, P-wave indicates impulse of contraction generated by SA-node and it spreads in atria causing atrial depolarization.

T-wave is the most constant and conspicuous wave having the tallest amplitude. It is the first positive deflection during ventricular depolarization.

S - wave is the next downward deflection constant but often inconspicuous.

T- wave is repolarisation wave of ventricular relaxation.

In ECG, P-wave indicates impulse of contraction generated by SA-node and it spreads in atria causing atrial depolarization.

T-wave is the most constant and conspicuous wave having the tallest amplitude. It is the first positive deflection during ventricular depolarization.

S - wave is the next downward deflection constant but often inconspicuous.

T- wave is repolarisation wave of ventricular relaxation.