Atrioventricular reentrant tachycardia (AVRT) is a rhythm problem in your heart that makes it beat too fast. It results from an extra connection between your upper and lower chambers. You might hear ...

Every so often, you might feel like your heart skips a beat. It's called a palpitation, and the beat that follows can feel intense: Think a thumping sensation, a quick pressure, or a fluttering or ...

A fast heartbeat can be caused by emotions like stress or anxiety. Dehydration, or drinking caffeine or other stimulants, can ...