Reentry arrhythmia occurs when electrical signals in the heart deviate from their usual path, creating a loop that causes repeated stimulation and disrupts the heart’s rhythm. Symptoms of reentry ...

The sinoatrial (SA) node is the natural pacemaker of the heart. It generates electrical impulses that cause the heart’s chambers to contract, setting the heart rate. The SA node typically generates 60 ...

Arrhythmias are due to problems with your heart’s electrical pathways, affecting its rate or rhythm. Heart conditions, electrolyte imbalances, and certain medications are among the causes that can ...

A heart shock may restore the heart’s rhythm and is a potential treatment for atrial fibrillation (AFib). Doctors also refer to heart shock as electrical cardioversion. In AFib, a person has an ...

The human heart beats nearly 100,000 times a day, powered by a precise electrical system that keeps blood flowing to every ...

For the first time, scientists have succeeded in artificially mimicking the ion signaling of heart muscle cells. To succeed, ...