What is AF?

The chronic process of atrial fibrillation leads to both the continuation of the arrhythmia and the remodeling of the left atrium, with consequent fibrosis and worsening AFib.

Atrial Fibrillation (AFib) is the most commonly diagnosed heart rhythm disorder, affecting more than 37 million people worldwide. In AF, the upper chambers of the heart (the atria) quiver instead of beating in a coordinated way.

Over time, AF changes the heart itself. The left atrium stretches and scars, which makes AF more persistent and weakens the atrium’s ability to pump.

AF can lead to blood clots, stroke and heart failure. AF causes about 1 in 7 strokes (CDC), and as populations age, the number of people living with it continues to grow.

Atrial Fibrillation is Atrial Failure

Representation of electrical activity in the heart during Atrial Fibrillation

Learn More

What Is Atrial Fibrillation?
National Institutes of Health

What Is Atrial Fibrillation?
Centers for Disease Control and Prevention

For Patients

AFib Patient Resources
Atrial Fibrillation Awareness & Resources