Cardiac Electrophysiology and Arrhythmia Service

The UCSF Cardiac Electrophysiology and Arrhythmia Service is known worldwide for expert evaluation and treatment of patients with a variety of heart rhythm disorders. Cardiac electrophysiology – a subspecialty of cardiology that focuses on the heart's electrical activity – is a rapidly growing field on the forefront of efforts to find new treatments and cures for arrhythmias.

With a history of innovation, UCSF's electrophysiology service has played a leading role in the tremendous advances recently made in assessing and treating abnormal heart rhythms. In the 1980s, doctors at UCSF Medical Center pioneered the use of catheter ablation, a highly successful treatment to disrupt an abnormal electrical signal that is causing an arrhythmia. Today, we use this technique to resolve a variety of cardiac arrhythmias.

Our team of experienced electrophysiologists, nurses and technicians is devoted to the care of patients with abnormal heartbeats. We perform more than 900 procedures a year, including 400 catheter ablation procedures. This depth of experience creates the foundation for our efficiency and expertise.

Our service also maintains a vigorous research program. Working with the National Institutes of Health, the Food and Drug Administration, and pharmaceutical or medical device companies, we carry out clinical trials – studies of experimental therapies that often lead to more effective treatments. Our patients who choose to participate in clinical trials can benefit from access to previously unknown therapies, devices or medications that may work better for them than the traditional options. In turn, our service's involvement in research and development enhances our ability to provide specialized and personalized care to our patients.

Doctor referral required

Our locations

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    Decorative Caduceus

    Multiple Cardiac Sensors for the Management of Heart Failure

    The MANAGE-HF study is a multi-center, global, prospective, open label, multi-phase trial intended to evaluate the clinical efficacy of the HeartLogic heart failure diagnostic feature.


    Decorative Caduceus

    aMAZE Study: LAA Ligation Adjunctive to PVI for Persistent or Longstanding Persistent Atrial Fi...

    This study is a prospective, multicenter, randomized (2:1) controlled study to evaluate the safety and effectiveness of the LARIAT System to percutaneously isolate and ligate the Left Atrial Appendage from the left a...


    Decorative Caduceus

    Coffee and Real-time Atrial and Ventricular Ectopy

    Atrial fibrillation (AF) and heart failure (HF) are morbid, costly, and incompletely understood diseases that have reached epidemic proportions worldwide. A dose-dependent relationship exists between premature atrial...


    Decorative Caduceus

    Transseptal vs Retrograde Aortic Ventricular Entry to Reduce Systemic Emboli

    This study is a prospective, multicenter, randomized (1:1) controlled comparative effectiveness trial of a transseptal approach to left ventricular ablation compared to a retrograde aortic approach to prevent cerebra...


    Decorative Caduceus

    A Trial of High Power-Short Duration Versus Standard Power-Long Duration Radiofrequency Ablatio...

    This study is a prospective, randomized controlled study to compare overall clinical outcomes between High Power Short Duration (HPSD) and standard radiofrequency (RF) ablation settings for Atrial Fibrillation (AF) a...


    Decorative Caduceus

    Individualized Studies of Triggers of Paroxysmal Atrial Fibrillation

    The I-STOP-Afib study will test the comparative effectiveness of using N-of-1 trials vs. symptom surveillance alone to reduce Atrial Fibrillation (AF) episode frequency and severity and improve quality of life for AF...


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