- Oct 26, 2011
I have documented A Fib, A Runs, and arrhythmia's that hit in the middle of the night. Af...

Atrial fibrillation/flutter is a heart rhythm disorder (arrhythmia). It usually involves a rapid heart rate, in which the upper heart chambers (atria) are stimulated to contract in a very disorganized and abnormal manner.
Auricular fibrillation; A-fib