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.
- Heart Conduction system abnormalities
Approximately 2.7 million people in the United States have atrial fibrillation. It is the most common type of heart arrhythmia (irregular...