What Is Atrial Fibrillation?
By Chris Iliades, MDMedically Reviewed by Pat F. Bass III, MD, MPH
About 2.7 million Americans have afib, a type of heart disease.
Atrial fibrillation is a common form of heart disease, and the most common cause of irregular heart rhythms that start in the upper chambers of the heart (the atria).
The term fibrillation refers to a fluttering, disorganized type of heartbeat, also known as heart flutter or atrial flutter.
https://www.everydayhealth.com/atrial-fibrillation/guide/
