A heart rhythm specialist explains how electrical signals keep the heart beating—and how wearables are helping detect ...

For decades, doctors and researchers have puzzled over a basic heart rhythm mystery: Why do women tend to have faster heartbeats while men are more likely to develop irregular rhythms like atrial ...

Junctional rhythm is an irregular heart rhythm that stems from a natural pacemaker in the heart known as the atrioventricular junction. The heart has several built-in pacemakers that help control its ...

A fundamental discovery reported in the March 1 issue of the journal Nature uncovers the first molecular evidence linking the body’s natural circadian rhythms to sudden cardiac death (SCD).

Genetic testing is moving from predicting heart attacks years down the line to flagging dangerous heart rhythms before they ever appear on an electrocardiogram. Instead of waiting for symptoms, ...