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

Prepare for the Basic Arrhythmias and 12 Lead EKG Exam. Study with detailed explanations, flashcards, and multiple choice questions to understand arrhythmias better. Get ready for your exam!

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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