This is ATRIAL FIBRILLATION. Fibrillating right atria and rapid ventricular response. Pulmonary vein isolation was performed and patient went back to sinus rhythm. Dr. Bobby Yanagawa @BobbyYanagawa #AtrialFibrillation #AFib #Clinical #Video #Heart #OpenHeart #CTS #ThoracicSurgery #RVR #Beating