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Electrophysiology (EP) is a cardiac specialty that studies the electrical activity in the heart to determine if there are any disturbances in the heart’s rhythm. An “electrophysiology study”, or EP study, refers to any procedure that requires the insertion of an electrode catheter into the heart. These catheters are long, flexible wires that transmit electrical current to and from the heart. An electrophysiology study can be done to diagnose a heart rhythm abnormality, while other EP studies access the heart for treatment or correction of a condition.

The electrical system in your heart controls the rhythm of your heart and keeps blood pumping and circulating throughout your body. Strong blood circulation throughout your body is important since circulation nourishes and energizes your body.

Cutting-Edge Electrophysiology Technology

The electrophysiology laboratories at North Shore-LIJ Health System use the most advanced diagnostic and treatment technologies that improve patient care and patient safety in the field of electrophysiology. Regionally and nationally recognized, our cardiologists, technicians and healthcare professionals work as a team to implement the latest technology, including implantable defibrillators, pacemakers, diagnostic electrophysiology studies, tilt table tests and signal averaged electrocardiograms.

In 2011, North Shore University Hospital (NSUH) in Manhasset and Long Island Jewish Medical Center in New Hyde Park were among the first hospitals to implant a heart pacemaker designed to be safely used during certain magnetic resonance imaging (MRI). The new MRI-friendly heartbeat regulator was recently approved by the U.S. Food and Drug Administration and will be available for use by all of the North Shore-LIJ Health System electrophysiology programs.

A pacemaker is a small device implanted under the skin (most often in the shoulder area just under the collarbone) that sends electrical pulses to prevent a slow heartbeat. An MRI combines a powerful magnetic field, a computer and radio frequency pulses to produce detailed images of the body’s organs, blood vessels, muscle, joints and tissues.

Until recently, people who had a pacemaker were advised not to have an MRI because it could interfere with pacemaker operation, damage the device’s internal components or pose risks to the patient. A new pacemaker, the Revo MRI ™ Sure Scan ® pacing system, developed by Medtronic, Inc., is now compatible with certain MRI procedures.

Our pioneering electrophysiology program coordinates with the following departments to provide first-class comprehensive care of patients with heart arrhythmias, or abnormal heart beats:

  • Cardiac Surgery
  • Neurosciences
  • Women’s Health
  • Imaging / Radiology


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