What is an electrocardiogram (EKG, ECG)? (Evgueni Fayn, MD)

Evgueni Fayn, MD, electrophysiologist, describes how an electrocardiogram (EKG, ECG) works and how it is used to diagnose arrhythmia or irregular heartbeat. Dr. Fayn is part of the Froedtert & the Medical College of Wisconsin Arrhythmia Program.