Ulrika Birgersdotter-Green, MD, is a board-certified cardiologist who specializes in diagnosing and treating heart rhythm disorders. She directs the Pacemaker and ICD (Implantable Cardioverter Defibrillator) Service at UC San Diego Health and leads one of the largest lead extraction programs in the Western United States. Dr. Birgersdotter-Green's research interests include the mechanisms of arrhythmias, cardiac resynchronization therapy and developing new methods and indications for cardiac device implantation as well as lead extractions. She is actively involved in large clinical trials evaluating biventricular pacing therapy for heart failure management, new cardiac device technology and publishes regularly in electrophysiology journals. She has also co- authored several major consensus documents involving cardiac device guidelines and serves on the editorial review board for several medical journals, including Circulation A&E and is the an associate editor for Heart Rhythm O2.