Dr. Hugh Calkins answers the question: 'Atrial Fibrillation vs. Atrial Flutter?' — -- Question: My doctor told me I sometimes have atrial fibrillation and at other times have atrial flutter. What ...

Atrial fibrillation happens most often in older adults and in people with other heart problems. But it also affects younger people. Roughly 800,000 Americans under age 40 have atrial fibrillation, ...

Atrial fibrillation (AFib) is a kind of irregular heartbeat, or arrhythmia. A problem with the electrical signals that control your heart’s pumping action causes it to beat too fast in a pattern that ...

Atrial fibrillation causes an irregular heartbeat that’s often faster than usual. People with some types of atrial fibrillation may sometimes have a usual heart rate, while in others, it may remain ...

When it comes to heart health, many conditions are tricky to diagnose because their symptoms can be similar to others, and atrial fibrillation (AFib) is no exception. That's a problem, since untreated ...

If you have a racing or irregular heartbeat, also known as an arrhythmia, one likely suspect is atrial fibrillation (AFib). “Of all the possible heart rhythm disorders, atrial fibrillation is by far ...