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 ...

Having an accelerated junctional rhythm occurs when the atrioventricular node in your heart beats too quickly. It happens as a result of damage to your heart’s primary natural pacemaker. There’s no ...

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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 ...

Years of high-intensity exercise may come with an unexpected heart risk for male endurance athletes over the age of 50, according to new research from the University of Leeds. The study, published ...

“Understanding the remodeling that’s going on in the heart at the transcriptional level is pretty fascinating,” said Elizabeth Schroder Stumpf, a physiologist at the University of Kentucky, who was ...

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).

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, ...