Sinus bradycardia occurs on an ECG when there is a normal upright P wave in lead II ― sinus P wave ― preceding every QRS complex with a ventricular rate of less than 60 beats per minute.

Sinus bradycardia occurs on an ECG when there is a normal upright P wave in lead II (sinus P wave) preceding every QRS complex with a ventricular rate of less than 60 beats per minute. Frequently ...

Bradycardia, or a heart rate that is too slow, can be a serious condition, especially if the heart is not pumping enough oxygen-rich blood throughout the body. Here's what medical experts consider ...

Bradycardia refers to a resting heart rate that is slower than usual. A heart rate of fewer than 60 beats per minute (bpm) may indicate an underlying health issue, but this is not always the case ...