<P> The P wave in the ECG represents atrial depolarization , which results in atrial contraction , or atrial systole . </P>
<P> The P wave in the ECG represents atrial depolarization , which results in atrial contraction , or atrial systole . </P>
the p-wave phase of an electrocardiogram ( ecg ) represents
the p-wave phase of an electrocardiogram ( ecg ) represents
atrial depolarization
atrial depolarization