Electrophysiology Laboratory


The experienced staff of South Nassau’s Electrophysiology Laboratory specializes in conditions related to the electrical activities that make the heart work properly. This includes using pacemakers and other treatments to correct issues with heart rhythm. Part of the Center for Cardiovascular Health, this “next-generation” lab is one of the most advanced and well-equipped on Long Island. And it was the first on Nassau's South Shore to receive New York State Department of Health approval.

Our staff has expertise in:

  • Implanting, repairing and replacing pacemakers, which keep heart rhythms normal 
  • Implanting, repairing and replacing defibrillators, which automatically “shock” the heart muscles when rhythm is not correct, to prevent cardiac arrest
  • Technology to monitor implanted devices remotely, using Bluetooth wireless communications
  • Cutting-edge equipment that provides three-dimensional images of the heart, so physicians can see virtual (computer-generated) electrical activity in real time (EnSite Velocity™ Cardiac Mapping System)
  • Cardiac ablation to create small scars on the heart to correct heart rhythm (arrhythmia)
  • Noninvasive Microvolt T-Wave Alternans for evaluation of dangerous rhythms
  • Tilt table testing to diagnose patients who have fainting spells and dizziness (syncope)
  • Advanced equipment that uses low-radiation fluoroscopy to offer multiple enhanced views of the heart for diagnosis and treatment (Artis zee® Biplane System)
  • Technology that creates three-dimensional mapping of the heart, so our physicians can pinpoint cells causing improper heart rhythm and treat the precise area

And we’ve earned honors for our efforts to help heart patients remain as healthy as possible after hospital stay.

‘Revolutionary’ Care for Heart Failure

Our experienced staff works with the most advanced, next-generation devices to treat heart conditions. Some examples:

  • South Nassau is the first Long Island hospital to implant the world's smallest, wireless remote pacemaker – the BIOTRONIK Evia® pacemaker. The quarter-size pacemaker is 20 percent smaller than other pacemakers, and it communicates information about any problems with your heart rhythm. And the technology allows our experienced physicians to perform a complete checkup without an office visit, using this remote wireless technology.
  •  South Nassau is also among the first hospitals in the U.S. and the first Long Island hospital to treat patients with the INCEPTA™ implantable cardioverter defibrillator (ICD). This device, which is among the world's smallest and thinnest, treats heart failure and prevents sudden cardiac death. And they last up to 10 years, which means our patients have long-term comfort and fewer return trips. 
  • For heart failure patients who meet certain Food and Drug Administration criteria, our lab also offers treatment considered revolutionary: “biventricular” pacemakers to correct the heart rhythm. With heart failure, the weakened heart is not beating in sync. Previous treatment depended on medicines and diet. But these advanced pacemakers restore the heart rhythm so that the heart beats normally.

For more information on these procedures, or to make an appointment, please call (516) 632-3672.

Electrophysiology: Janine's Story

An exuberant Janine Gentile has regained her health — and life — thanks to Lawrence Kanner, MD, South Nassau's Director of Electrophysiology Services. He and his team are experts diagnosing and correcting problems with heart rhythm. 

For over 12 years, Gentile, an elementary school teacher, had been suffering from sudden fainting. The cause: neurocardiogenic syncope, in which blood pressure falls quickly, and blood flow to the brain drops. This caused her to faint. And it greatly affected her life and her ability to work. Heart medicines and a pacemaker helped, but they did not correct the condition completely. Her primary care physician suggested she see Dr. Kanner at South Nassau. After evaluating her, he recommended something that changed her life: a new, highly advanced pacemaker that did something her previous pacemaker couldn’t do.

Most pacemakers have no way of sensing blood pressure before it drops too low, Dr. Kanner says. So the pacemaker she had implanted earlier made adjustments to her blood pressure too late. "So she continued to black out," he says. "The more advanced BIOTRONIK Evia pacemaker, on the other hand, senses a potential drop in blood pressure before it occurs and adjusts the heart rate earlier. It’s able to raise blood pressure in time to help prevent a blackout."

BIOTRONIK's Evia pacemaker, which is also 20 percent smaller than traditional models, incorporates wireless monitoring and works like a cellphone to send important information to the physician. The physician, in turn, can use the same cellphone-like technology to perform a complete wireless remote checkup. 

It has been years since Janine's new pacemaker was implanted. She's back teaching grade school, running 8 miles a week and snow skiing. She was even able to join her husband to hike a volcano in Hawaii.

"I am grateful for the life that was given back to me," she said. “The thought of not being able to teach again was very difficult," she said. "Dr. Kanner's knowledge, compassion and bedside manner are amazing. My life would be very different had I not met him."

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