S1 and S2 are the normal heart sounds you hear when the heart valves close. Heart murmurs are extra sounds that can be heard during systole, diastole, or as a continuous sound. S3 and S4 are abnormal ...

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 ...

Your heartbeat can provide valuable clues to help you stay well. Here’s what top cardiologists want you to know about it.

You may have heard the phrase “my heart skipped a beat” when someone was talking about a romantic encounter. In truth, hearts that beat irregularly are dangerous for your health. Atrial fibrillation ...

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 ...

Arrhythmia puts you at greater risk of potentially life threatening complications affecting your heart, brain, and lungs. An arrhythmia is an abnormal heartbeat that beats too fast, slow, or ...

Transient idiopathic arrhythmias are temporary heart rhythm disturbances without a clear cause, which can be harmless or require treatment if symptoms are frequent. Diagnosis can be challenging, as ...

Question: I'd like to learn more about supraventricular tachycardia. I've been told a couple of different views on this and it's very unsettling. My condition scares me at times. On several occasions, ...

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 ...

Atrial fibrillation, a type of heart arrhythmia, is a leading cause of stroke. Additionally, strokes may be associated with arrhythmia onset. However, such arrhythmias tend to resolve within a few ...