Atrial fibrillation (AFib) is a type of heart arrhythmia that causes the top chambers of your heart, the atria, to quiver and beat irregularly. AFib used to be described as chronic or acute, with ...

Atrial fibrillation, or AFib, is a condition in which the heart beats quickly and irregularly. According to the Centers for Disease Control and Prevention, AFib is the most common heart rhythm ...

Share on Pinterest New research suggests that there may be more than 10.5 million people in the United States living with atrial fibrillation, that is, three times more cases than experts had ...

Valvular atrial fibrillation (A-fib) involves a condition that leads to an irregular or abnormal heart rhythm. This can increase a person’s risk of cardiovascular complications, such as stroke.

More than 33 million people around the world have the irregular, often rapid heartbeat known as atrial fibrillation (AFib). It’s more common as you get older. But for reasons that aren’t fully ...

Atrial fibrillation, or AFib, is the most common type of irregular heartbeat. About 2.7 million Americans have it. AFib happens when the electrical activity of the heart isn’t working the way it’s ...