Many arrhythmias have no clear cause; these idiopathic cases arise without identifiable triggers, while for others, the causes may be congenital or acquired.

A heart attack is a sudden and shocking event that requires an immediate response to stave off the risk of permanent damage being inflicted on the heart muscle. It happens when the blood supply is ...

Heart racing suddenly during workouts or daily activity? Doctors explain supraventricular tachycardia (SVT), its symptoms, causes, and when to seek help.

Have you ever experienced a sudden increase in heart rate while sitting, lying in bed or even during a calm moment at work? The feeling can be unsettling as it often comes without warning or a clear ...