Cardiac Electrophysiology


Cardiac Electrophysiology is a branch of cardiology focused on heart rhythm disorders like abnormal heartbeats (arrhythmias) and other conditions related to the heart’s electrical system.

When cardiac electrophysiology symptoms arise, you need experienced specialists who can swiftly identify the underlying problem and prescribe the most effective, cutting-edge course of treatment available.

At Aurora St. Luke’s Medical Center Cardiac Electrophysiology Division in Milwaukee, and at hospitals throughout Wisconsin, our cardiac electrophysiology specialists are making groundbreaking advancements in electrophysiology research, education and clinical care.


Your heart has a natural pacemaker that sends out electrical signals to the rest of the heart muscle. These signals force your heart’s four chambers to relax and contract in a regular rhythm that pushes blood and oxygen around your body. Without this flow of electrical impulses, your heart simply wouldn’t pump.

Problems with the heart’s electrical system can cause a variety of cardiac electrophysiology symptoms, or no symptoms at all. Some of the most common signs of a heart rhythm disorder include:

  • Minor heart palpitations
  • Fluttering in the chest
  • Rapid heartbeat
  • Slowed heartbeat
  • Fatigue
  • Difficulty breathing
  • Dizziness
  • Lightheadedness
  • Fainting (syncope)
  • Chest pain
  • Sudden cardiac arrest
  • Death


Cardiac electrophysiology symptoms often come and go, making them hard to identify and diagnose. Our experienced team uses sophisticated equipment to pinpoint the precise cause of these conditions.

Along with various types of outpatient monitoring and testing, we frequently diagnose cardiac electrophysiology symptoms with tilt table testing. This type of testing can detect problems with your heart’s electrical system.

Our diagnostic tools also include the latest cardiac electrophysiology research. This research is conducted at Aurora St. Luke’s Medical Center Cardiac Electrophysiology Division, one of the oldest and most active electrophysiology research programs in the United States.

Services & Treatment

Thanks to the latest innovations in cardiac electrophysiology technology and our team of experienced specialists, we’re frequently able to cure many cardiac electrophysiology symptoms including arrhythmias. By effectively treating your symptoms, we can significantly improve your quality of life and eliminate the risk of sudden cardiac death.

In cases where arrhythmias can’t be cured, our cardiac electrophysiology treatment plans include medications, procedures, and implanted devices to manage your symptoms both short and long-term.

These treatments and services include:

  • Intraoperative mapping - This procedure is performed during an already-scheduled open-heart surgery to locate an arrhythmia’s exact point of origin, which is usually found near a previously damaged area of the heart. Once the location of the arrhythmia is determined, it can be corrected during surgery.

  • Catheter ablation – During this procedure, your doctor threads catheters (thin tubes) through a blood vessel to your heart. Through these catheters, your doctor then destroys the tissue that’s been causing your irregular heartbeat.

  • Device therapy – Device therapy makes use of a pacemaker to regulate the contractions of your heart, preventing it from beating irregularly.

  • Drug therapy – In many cases, medication can be used to regulate the rhythms of your heart.

  • Heart surgery – Heart surgery can improve overall heart function, strengthen the structures of the heart, and relieve your cardiac electrophysiology symptoms.

Meet Our Team

Our Cardiac Electrophysiology Division is one of the oldest and most active programs in the United States, with 11 full-time cardiac electrophysiology specialists.

Leading our team of specialists is Masood Akhtar, MD. Dr. Akhtar established Aurora’s Electrophysiology Division in 1977 and is one of the world’s most respected electrophysiologists.

Under Dr. Akhtar’s tutelage, our nurses and technologists receive on-site training in the latest cardiac electrophysiology treatment innovations. In addition to treating patients, our specialists teach, conduct clinical research, publish and present at national and international conferences.

Thanks to our world-renowned research program, we’re able to offer you access to the most cutting edge cardiac electrophysiology devices, drugs and therapies available today.

Cardiac Electrophysiology Specialists


A clinical professor of medicine and board-certified electrophysiologist, Dr. Akhtar is considered one of the world's preeminent electrophysiologists. In 1977, he came to what is now Aurora Sinai to develop the cardiac electrophysiology program. Dr. Akhtar also developed the electrophysiology laboratory at Aurora St. Luke's Medical Center. He has been honored as a Pioneer in Cardiac Electrophysiology by the Heart Rhythm Society.

Jasbir S. Sra, MD, FACC, FHRS

A board-certified electrophysiologist, Dr. Sra has been at Aurora since 1990. He performed his first atrial fibrillation ablation in 1999. In 1995 he was the first doctor in the U.S. to implant an atrial defibrillator. In 1999 he was appointed professor of medicine, Cardiovascular Disease Section, at the University of Wisconsin School of Medicine and Public Health.

Dr. Sra serves as the Atrial Fibrillation Center Medical Director. He has been honored as a Fellow by the American College of Cardiology and the Heart Rhythm Society, and has been listed in The Best Doctors in America for a number of years.

Ryan Cooley, MD

Dr. Cooley has been an electrophysiologist at Aurora since 1999. He is board certified by the American Board of Internal Medicine in internal medicine, cardiovascular disease and cardiac electrophysiology. In 1999, he was appointed clinical assistant professor of medicine, Cardiovascular Disease Section at the University of Wisconsin School of Medicine and Public Health.

Mohamed Djelmami-Hani, MD, FHRS

A board-certified electrophysiologist, Dr. Hani received advanced fellowship training in complex interventional EP procedures including atrial fibrillation and ventricular tachycardia ablation. He has been honored as a Fellow by the Heart Rhythm Society.

Atul Bhatia, MD, FACC

Dr. Bhatia is a clinical assistant professor of medicine and a board-certified electrophysiologist.

Indrajit Choudhuri, MD

Dr. Choudhuri is a clinical assistant professor of medicine and board-certified electrophysiologist.

Anwer Dhala, MD, FACC, FHRS

Dr. Dhala is a clinical associate professor of medicine, a clinical professor of pediatrics, and board-certified electrophysiologist.

M. Eyman Mortada, MD

Dr. Mortada is a clinical assistant professor of medicine and a board-certified electrophysiologist.

Vikram Nangia, MD

Dr. Nangia is a clinical assistant professor of medicine and a board-certified electrophysiologist.

Contact Us

Aurora Cardiac Electrophysiology Division
Aurora Cardiovascular Services, Aurora Medical Group
2801 W Kinnickinnic River Parkway
Aurora St. Luke's Physician Office Building, Suite 777
Milwaukee, WI 53215-3669

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