Dr. Hugh Calkins answers the question: 'Atrial Fibrillation vs. Atrial Flutter?' — -- Question: My doctor told me I sometimes have atrial fibrillation and at other times have atrial flutter. What ...

Ronald Wharton, MD: Hello. This is Ronald Wharton. I am a cardiologist at Montefiore Medical Center at the Albert Einstein College of Medicine in Bronx, New York, and I just thought I would share with ...

When your electrical system is working normally, the two upper chambers of the heart (atria) contract and pump blood into the two lower chambers (ventricles) in a well-coordinated way. This results in ...

A small series provides provocative new data on the safety of performing direct current cardioversion (DCCV) without oral anticoagulation in high-risk patients with a Watchman left atrial appendage ...