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Cardiac Electrophysiology and Pacing Section


Caring for patients having difficulty with the heart's rhythm and electrical signaling, our experts in Cardiac Electrophysiology & Pacing are the leaders in the diagnosis and care of patients with atrial fibrillation, ventricular tachycardia, Wolff Parkinson White syndrome, flutter and other abnormal heart rhythms. The Cardiac Electrophysiology & Pacing section has five state-of-the-art laboratories that offer a wide range of electrophysiology and mapping and ablation procedures to patients with suspected rhythm abnormalities. Other services include an Atrial Fibrillation Clinic, remote monitoring devices, genetic testing, a full range of pacemaker and cardioverter defibrillator (ICD) devices, biventricular pacemakers, removal of leads, advanced mapping and ablation therapy, Syncope Clinic and Device Clinic.

In the Cardiac Electrophysiology & Pacing section, we offer a variety of highly specialized approaches to heart-rhythm problems. The procedures may be used to diagnose a heart problem or to treat it. Arrhythmia treatment depends on the type and severity of the arrhythmia. In some cases of arrhythmia, no treatment is necessary. These include:

Electrophysiologists (doctors who specialize in heart rhythms) are also experts in the treatment and long-term management of many types of abnormal heart beats (arrhythmias). These include:

Cleveland Clinic Electrophysiologists use specialized approaches to diagnose and treat arrhythmias, such as:

    Why choose Cleveland Clinic for your care?

    Our outcomes speak for themselves. Please review our facts and figures and if you have any questions don’t hesitate to ask.

    The 2011 Cardiac Rhythm Disorders outcomes data includes information on volume of electrophysiology laboratory procedures and success rates for a variety of procedures.


    Section Head

    Bruce Lindsay, MD
    Section Head, Cardiac Electrophysiology & Pacing

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    Results: 21 Doctors


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    Bryan Baranowski, MD

    Bryan Baranowski, MD

    Baranowski, Bryan, MD

    Location(s): Cleveland Clinic Main Campus

    Department: Cardiovascular Medicine

    Specialties: Abnormal Heart Rhythms, Arrhythmogenic Right Ventricular Dysplasia, Atrial Fibrillation, Bradyarrhythmias, Cardiac Implantable Electronic Device Infection, Heart Palpitations, Long QT Syndrome (LQTS) more

    Treats: Adults Only

    Surgeon: No

    Education: Vanderbilt University College of Medicine

    Mandeep Bhargava, MD

    Mandeep Bhargava, MD

    Bhargava, Mandeep, MD

    Location(s): Cleveland Clinic Main Campus

    Department: Cardiovascular Medicine

    Specialties: Abnormal Heart Rhythms, Arrhythmogenic Right Ventricular Dysplasia, Atrial Fibrillation, Bradyarrhythmias, Cardiac Implantable Electronic Device Infection, Heart Palpitations, Long QT Syndrome (LQTS) more

    Treats: Adults Only

    Surgeon: No

    Education: Maulana Azad Medical College, University of Delhi

    Thomas Callahan, IV, MD

    Thomas Callahan, IV, MD

    Callahan, IV, Thomas, MD

    Location(s): Cleveland Clinic Main Campus

    Department: Cardiovascular Medicine

    Specialties: Abnormal Heart Rhythms, Arrhythmogenic Right Ventricular Dysplasia, Atrial Fibrillation, Bradyarrhythmias, Cardiac Implantable Electronic Device Infection, Heart Palpitations, Long QT Syndrome (LQTS) more

    Treats: Adults Only

    Surgeon: No

    Education: Eastern Virginia Medical School

    Daniel Cantillon, MD

    Daniel Cantillon, MD

    Cantillon, Daniel, MD

    Location(s): Cleveland Clinic Main Campus, Twinsburg Family Health & Surgery Center

    Department: Cardiovascular Medicine

    Specialties: Abnormal Heart Rhythms, Arrhythmogenic Right Ventricular Dysplasia, Atrial Fibrillation, Bradyarrhythmias, Cardiac Implantable Electronic Device Infection, Heart Disease, Heart Palpitations more

    Treats: Adults Only

    Surgeon: No

    Education: Georgetown University School of Medicine

    Lon Castle, MD

    Lon Castle, MD

    Castle, Lon, MD

    Location(s): Richard E. Jacobs Health Center

    Department: Cardiovascular Medicine

    Specialties: Cardiac Electriophysiology & Pacing Section, Sports Cardiology Center, Cardiovascular Medicine Department

    Treats: Adults Only

    Surgeon: No

    Education: Temple University School of Medicine



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    Electrophysiology Laboratory

    A view of the Electrophysiology Laboratory

    The Electrophysiology Laboratory at Cleveland Clinic is an 8 room procedure suite designed to perform diagnostic, therapeutic and interventional electrophysiology based procedures.

    Advanced technology along with vast knowledge and skill of Cardiac Electrophysiology & Pacing physicians allow for many complex procedures and device implants, such as:

    • Pacemakers
    • Internal cardiac defibrillators
    • Loop recorder devices
    • Biventricular pacemaker and ICD devices
    • Mapping of complex arrhythmias
    • Catheter ablation for atrial fibrillation/ flutter, supraventricular tachycardias, ventricular arrhythmias, complex arrhythmias and for those who have previously failed ablations.
    • Transseptal puncture and epicardial ablations
    • External or internal cardioversion
    • Device lead extraction
    • Use of intracardiac echocardiography
    • Magnetically driven procedures including ablations and coronary sinus lead placements

    The Syncope Center, located near the electrophysiology laboratories performs approximately 2,000 diagnostic studies including tilt table testing, blood volume studies and other hemodynamic and/or autonomic nervous system evaluations.

    For more information about Cleveland Clinic Electrophysiology Lab,
    see this Spotlight Interview, EP Lab Digest, August 2011.

    What to Expect

    Whether you are coming from around the corner or around the world, you want to know what to expect before, during and after your visit with us. If you have any questions while reviewing this information, please contact us. We are happy to answer any questions you may have.

    Appointment Information

    By Phone

    Locally 216.444.6697 or toll-free 800.659.7822 or 800.223.2273, ext. 46697


    Go to Desk J2 - 2, 9500 Euclid Avenue, Cleveland, Ohio.


    Use our secure online form to submit an appointment request 24/7. We will receive it and follow-up with you as soon as possible.

    Physician Referrals

    Mon. - Fri., 8 a.m. - 5 p.m. (ET):
    Please call our scheduling offices at
    216.444.6697 locally or toll-free 800.223.2273, ext. 46697 (outside of the Cleveland area) 

    Call the Referring Physician Hotline 24 hours/day at 855.REFER.123 (855.733.3712).

    For Patients

    Cleveland Clinic Heart and Vascular Institute physicians, surgeons, and researchers continue to research into new treatments and therapies with the goal of improving patient care and outcomes into the future.

    Mom and daughter with Doctor

    Inherited arrhythmia disorders include several genetic conditions that place otherwise healthy individuals at risk for sudden cardiac death.

    Due to the fact that inherited arrhythmias are passed down from parents to children, a family-centered approach to care is essential. The Inherited Arrhythmia Center is staffed by pediatric and adult cardiologists who specialize in diagnosing and treating abnormal heart rhythms. Genetic counselors are also involved in the patient’s care. This team model provides patients and their families with a comprehensive approach to their disorder.

    What We Treat

    Inherited arrhythmias are abnormal heart rhythms that are passed down from family members. They place you at risk for dangerous heart rhythms such as ventricular tachycardia and ventricular fibrillation and sudden cardiac death. The most common arrhythmias include:

    Patients may have symptoms of fainting or a history of treated cardiac arrest – or – no symptoms but a family history of these conditions.

    The experienced electrophysiologists and genetic experts in the Inherited Arrhythmia Center specialize in treating patients with these conditions.

    Our Medical Team
    Peter Aziz

    Director: Peter Aziz, MD

    Staff Members

    Center for Pediatric and Congenital Heart Disease
    Miller Family Heart and Vascular Institute
    Genomics Institute
    Make an Appointment

    The Inherited Arrhythmia Center is located at Desk J2-2 on the second floor of the Sydell and Arnold Miller Family Heart & Vascular Institute.

    To make an appointment, please call toll-free 800.659.7822 (Cardiology Appointments) or schedule online with the Request an Appointment option. If you choose to request an online appointment, select Cardiology as the Department or Specialty Area. Let the appointment office know if you are having acute symptoms. When you make your appointment, ask the appointment secretary for the name of your physician.

    Physician Referrals - Call 800.659.7822 (or call the physician’s office directly).

    Before Your Appointment

    If your scheduled appointment is at least one week away, you will be asked to send in your records, including medical history, test results and films (such as echocardiogram, chest X-ray, MRI, CT, etc.) and a detailed family history if you have one. Some patients may have prior genetic testing and copies of the testing reports are helpful. All information should be sent in the same package.

    Important Mailing Information

    • Clearly mark the package with your name and address
    • Send the package via Airborne Express, Federal Express, or certified U.S. mail (make sure you have a tracking number)
    • Address the package to the physician you will be seeing
    • Address the package as follows:

      Dr. Peter Aziz
      Inherited Arrhythmia Center
      Cleveland Clinic
      9500 Euclid Avenue – Desk M41
      Cleveland, OH 44195

    If your scheduled appointment is less than one week away, please bring your records to your appointment.

    Travel to the Cleveland Clinic

    If you are traveling to Cleveland Clinic from outside of the area, we can help make the trip as easy as possible.

    What to Expect During Your Appointment

    You will meet with a nurse who will collect information about you and your condition.

    Depending on the specific type of inherited arrhythmia you have, you may need additional tests. These can include specialized blood tests, electrocardiogram (EKG), stress tests, ambulatory monitoring and/or imaging tests . You will then meet with your Center cardiologist. (S)he will review your records and take a medical history, perform a physical exam, and talk to you about other specialists within the Center that you may need to see. You will receive a diagnosis and plan of care.

    Genetic testing may be indicated as part of your evaluation and you may be asked to meet with our genetic counselors.

    Treatment plans include:

    • Learning about your inherited arrhythmia
    • Counseling on lifestyle considerations
    • Medications
    • Procedures such as catheter ablation or pacemaker/defibrillator implantation
    • Surgery

    How long will you need to stay at Cleveland Clinic?

    The length of time needed to complete all the tests is different for each patient. However, if you are visiting Cleveland Clinic from outside the area, you should plan to stay in the Cleveland area for 1 to 2 days.

    Follow Up

    Regular follow up is necessary for patients with inherited arrhythmias. Your doctor at the Center will let you know how often you will need to come back for follow-up care and the other details of your treatment plan.

    More Information

    To make an appointment with the Inherited Arrhythmia Center - Call toll free 800.659.7822

    If you need more information, click here to contact us , chat online with a nurse or call the Miller Family Heart & Vascular Institute Resource & Information Nurse at 216.445.9288 or toll-free at 866.289.6911. We would be happy to help you.

    Reviewed: 1/15

    Talk to a Nurse: Mon. - Fri., 8:30 a.m. - 4 p.m. (ET)

    Call a Heart & Vascular Nurse locally 216.445.9288 or toll-free 866.289.6911.

    Schedule an Appointment

    Toll-free 800.659.7822

    This information is provided by Cleveland Clinic and is not intended to replace the medical advice of your doctor or health care provider. Please consult your health care provider for advice about a specific medical condition.

    © Copyright 2015 Cleveland Clinic. All rights reserved.

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