Many arrhythmias have no clear cause; these idiopathic cases arise without identifiable triggers, while for others, the ...

VIENNA, Austria (AP) _ An irregular heart beat is more common among men but much more hazardous when it occurs in women, according to the first major study to examine gender differences in the ailment ...

Chest pain or palpitations can signal hidden heart trouble. Know when an ECG test is needed, what results show, and when to seek urgent care.

Your heart has been doing its job faithfully for years, beating steadily in the background while you go about your daily life. Then suddenly, you become acutely aware of every beat as it seems to ...

Researchers have discovered that microscopic structural changes in the aging heart may help prevent irregular heartbeats. The discovery challenges the idea that all age-related heart changes are ...

Bigeminy is an irregular heart rhythm where every normal beat is followed by an abnormal one. You should see a doctor if bigeminy causes dizziness, chest pain, or trouble breathing. Bigeminy can be ...

Virginia Tech Professor Steven Poelzing (at right) led a study published in the journal JACC Clinical Electrophysiology that challenges the idea that all age-related changes in the heart are harmful.

Drinking caffeinated coffee is safe for people with atrial fibrillation and may help protect against recurrence of the disorder, a new study finds. More than 10 million Americans live with atrial ...

Your heart beats about 100,000 times a day. Sometimes it beats faster and sometimes more slowly, depending on what you're doing and whether, for instance, you're all worked up about something. So ...

Millions of Americans experience an irregular heartbeat, which can be unsettling and scary. When irregular heartbeats happen — and they happen a lot — electrophysiologists have sophisticated solutions ...

The heart is a muscle about the size of your fist that pumps blood around the body. When the heart is functioning properly, it has a specific rhythm controlled by a mass of specialized heart tissue ...

Multifocal atrial arrhythmia is an uncommon type of tachycardia that usually develops in people with certain illnesses. Those with the condition have a heart rate of over 100 beats per minute.