A negative deflection following an R wave is called which wave?

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Multiple Choice

A negative deflection following an R wave is called which wave?

Explanation:
The negative deflection that comes after the upward R wave is the S wave. In the QRS complex, the Q wave is a small initial downward deflection before the R, the R wave is the first uptick, and the downward deflection following that uptick is the S wave. The T wave that follows represents ventricular repolarization, not part of the QRS. So a downward dip after the R wave is named the S wave.

The negative deflection that comes after the upward R wave is the S wave. In the QRS complex, the Q wave is a small initial downward deflection before the R, the R wave is the first uptick, and the downward deflection following that uptick is the S wave. The T wave that follows represents ventricular repolarization, not part of the QRS. So a downward dip after the R wave is named the S wave.

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