Sinus rhythm (a.k.a. normal sinus rhythm) refers to the normal heart beat originating from the sinoatrial node. This is manifested as an upright P wave in lead II of the ECG. Sinus bradycardia ...

To understand the difference between normal sinus rhythm and sinus arrhythmia, it's best to start by exploring the role of an electrocardiogram (ECG or EKG) in diagnosing such rhythms. During an ...

This results in an upright P wave in lead II on the ECG. If there is a P wave before every QRS complex, and it has a sinus morphology, then normal sinus rhythm, or NSR, is said to be present.

The ability to identify an abnormality on the 12-lead ECG ... normal variants in athletes, and do not require further evaluation in asymptomatic athletes. AV, atrioventricular; bpm, beats per minute; ...

How often should I take an ECG reading? Provided your heart gets a normal sinus rhythm, you’re likely to only need to periodically take an ECG test, just to check everything is in order.

The ECG records electrical impulses and provides ... an accelerated idioventricular rhythm may persist and take over the heart's normal sinus rhythm. It may cause symptoms like light-headedness ...