"Arrhythmia” means your heartbeat may be too fast, too slow, or irregular. You may not notice symptoms of it.

Get to know the symptoms and risks of atrial fibrillation (AFib), a type of irregular heart rhythm.

Does your heart race or skip a beat? Those are heart palpitations, and they can be a little scary. What causes them, and when should you see a doctor?

Skip to the facts on your irregular heartbeat. Find out what happens to your heart and if it’s serious.

Stay up to beat with AFib and learn how to manage your racing, fluttering heart.

Get to the heart of the matter and find out what AFib is.