A new study shows that the sinoatrial node (SAN) -- a small but powerful structure in the human heart that serves as its natural pacemaker and initiates every normal heartbeat -- runs on different ...

Atrial fibrillation, or A-fib, is an irregular heart rhythm that increases a person’s risk of stroke, heart failure, and even premature death. While many risk factors contribute to A-fib, one stands ...

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, ...

Irregular heartbeat conditions affect millions of people worldwide, causing hearts to beat too fast, too slow, or with an uneven rhythm. These cardiac rhythm disturbances, medically known as ...

Using computers to make a digital replica of the heart – a digital heart twin – can successfully identify problem areas deep in the heart muscle of people with a serious heart rhythm disorder, a new ...