However, this short-term regulation did not explain why the heart conduction system generally slowed down at night. “All the arrows pointed to the fact that there might be an intrinsic rhythm with the ...

A junctional rhythm occurs when the electrical activation of the heart originates near or within the atrioventricular node, rather than from the sinoatrial node. Because the normal ventricular ...

The rhythm is either sinus rhythm or not sinus rhythm. Sinus rhythm refers to the origination of the electrical activity coming from the sinus node — also known as the sinoatrial node, or SA node.

Detecting when a heart has a truly irregular rhythm by yourself is a toss up, and the only way to confirm an atrial fibrillation (AFib) is to get an electrocardiogram (EKG) from a cardiologist.

Irregular heart rhythm -- arrhythmia -- is when your heart doesn't keep up a good beat. Learn what it means here. You may not know what a heart valve is -- until it stops working right.

and the overall heart rhythm, he adds. Note: The heart rate is different from the heart rhythm, which refers to the thump-thump pattern in which your heart beats. You can have an abnormal heart ...

This cardiac remodeling is a key driver of irregular heart rhythms. My team and I set out to better understand how NOX2 affects the heart, and whether targeting it could reduce the risk of ...