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Cardiac Electrophysiology is a rapidly growing subspecialty of cardiology which focuses on the diagnosis and treatment of cardiac arrhythmias.  The cardiac electrophysiology (or “EP”) laboratory is a specialized invasive procedure area where various procedures are performed, including diagnostic electrophysiology studies, catheter ablations, pacemaker and implantable cardiac defibrillator (ICD) implantations, Laser extraction of pacemaker and ICD leads, and implantation of biventricular pacing devices for treatment of congestive heart failure.

Good Samaritan Hospital is on the forefront of innovative techniques to treat complex cardiac arrhythmias utilizing implantable devises.  Good Samaritan Hospital is the only hospital in Rockland and Orange counties to offer the Left Atrial Appendage Closures (LAAC) utilizing the WATCHMAN devise procedure. 

Request an Appointment or Refer a Patient | Call 845.533.7125 or 845.368.5953.

Cardiac Electrophysiology (EP) Studies at Good Samaritan Hospital

The heart has an electrical system which controls its rhythm. The normal “pacemaker” of the heart is the sinus node in the top of the right atrium; one of the upper chambers of the heart, which normally initiates and controls the heart rate.  The electrical activity then travels to the AV node in the middle of the heart which holds and delays the activity to allow time for the top chambers to pump the blood to the bottom chambers.  It then travels to and stimulates the bottom 2 chambers (“ventricles”) which then pump the blood to the body and to the lungs.

Abnormalities in the heart's electrical system can cause slow rhythms such as sinus bradycardia or heart block, fast heart rhythms such as atrial fibrillation or flutter, supraventricular tachycardia, ventricular tachycardia, or ventricular fibrillation.  These abnormal rhythms can cause symptoms of palpitations (abnormal fluttering), lightheaded or dizzy spells, syncope (passing out) or even death.

An electrophysiology study is a safe and relatively painless test which is used to: determine the cause of symptoms; determine if a patient is at risk of an arrhythmia (abnormal heart rhythm); determine which type and where the arrhythmia originates; determine the best type of treatment (e.g. possible pacemaker, defibrillator, medication, or ablation), and potentially to treat and cure the arrhythmia.

The Electrophysiology study is done by an electrophysiologist (cardiology physician specializing in arrhythmia management) using fluoroscopy (x rays) and small catheters (tubes with small pacemaker tips), placed through the vein in the groin, and then threaded to the heart.   Patients are awake (but sedated) during the procedure and don’t feel the catheters being placed into the heart.  The electrophysiologist uses a computer to stimulate the heart to test the electrical system and to potentially induce (start) the abnormal rhythm.  This information allows the physician to determine the best treatment.  If the treatment is catheter ablation this is often done at the same time to potentially cure the abnormal rhythm.  If the treatment is to be a pacemaker or implantable defibrillator (ICD) this is generally done separately, often during the same hospitalization.  Medications can be used to stimulate the heart and to test the rhythm.  The EP study generally takes one to two hours.

After the procedure, the catheters are removed, pressure is held, patients can remain in bed and are welcome to have their families and loved ones sit with them in the ambulatory unit. Patients are generally discharged the same day--or the following day if a pacemaker or ICD implant is required.

Left Atrial Appendage Closure (LAAC) – WATCHMAN Device

If you have atrial fibrillation that is not caused by heart valve problems (Non-valvular atrial fibrillation), and are looking for an alternative to blood thinners, Good Samaritan Hospital offers a unique one-time procedure that may reduce your risk of stroke for a lifetime without blood thinners.

Good Samaritan Hospital is the only hospital in Rockland and Orange counties to perform Left Atrial Appendage Closures (LAAC) utilizing the WATCHMAN device. Our Electrophysiologists are national proctors and have extensive experience in cardiac device implantations, completing over 140 LAAC procedures in the last 5 years.

Are You A Candidate For A Left Atrial Appendage Closure Device?
Request an Appointment or Refer a Patient | Call 845.533.7125.


Non-Valular Atrial Fibrillation (Afib) and Stroke

Atrial fibrillation (AFib) occurs when the right and left atria in the heart no longer contract in a coordinated way causing an irregular heartbeat. AFib can decrease the heart’s pumping capacity by as much as 15-20%. The decreased blood flow and erratic heartbeat increases the chance of blood cells bonding together to create clots that can enter the bloodstream and trigger a stroke. According to the National Stroke Association, AFib patients are five times more likely to have a stroke than someone with a regular heartbeat.

Blood thinners, also called anticoagulants, are an effective way to lower the risk of stroke in people with atrial fibrillation. But some people need an alternative to blood thinners, because they have an occupation, lifestyle or medical condition that puts them at risk for excessive bleeding.

Alternative to Blood Thinners

More than 90% of stroke-causing clots that come from the heart are formed by blood pooling in the Left Atrial Appendage (LAA), the small pouch-like sac in the top left chamber of the heart. This pouch is not needed for normal functioning of the heart.

Good Samaritan Hospital offers the Left Atrial Appendage Closure (LAAC), procedure which eliminates the need for blood thinners by utilizing the WATCHMAN device to permanently close off the LAA and keep blood clots from escaping.

How the Left Atrial Appendage Closure (LAAC) Procedure Works

During the LAAC, the WATCHMAN device is implanted into the left atrial appendage. The umbrella-balloon like device is about the size of a quarter and made from very light and compact materials commonly used in many other medical implants.

Your doctor will insert a small intravenous line in your upper leg to insert a narrow tube and guide the WATCHMAN device into your heart’s left atrial appendage (LAA). Every patient’s LAA is shaped and sized differently, so our experienced team uses advanced ultrasound technology to take measurements, choose the appropriately sized device and verify proper placement over the opening of the LAA.

The self-expanding frame of the WATCHMAN seals off the LAA and acts as a filter for blood clots to prevent a stroke. The minimally invasive procedure takes about an hour and is performed under general anesthesia. Patients commonly stay in the hospital overnight and are able to leave the following day.

After Your Left Atrial Appendage Closure Procedure

Once the device is implanted, heart tissue will begin to grow over the implant and form a natural barrier against blood clots. You will continue to take blood thinners for approximately 45 days or until your LAA is permanently closed off by the growth of the heart tissue over the device. Your cardiologist and electrophysiologist will monitor this process by taking pictures of your heart to see when you can stop taking the blood thinner.

Are You A Candidate For A Left Atrial Appendage Closure Procedure?

If you answer yes to the questions below, the left atrial appendage closure procedure and WATCHMAN device may be the right choice for you:

  • Have you ever been diagnosed with atrial fibrillation not caused by a heart valve problem?
  • Are you currently taking or have you considered taking warfarin or other anticoagulant medication? (sold under brand names of Pradaxa, Eliquis, Xarelto, Savaysa, Jantoven or Coumadin)
  • Do you have a reason (bleeding, lifestyle, occupation or frequent falling) to look for a safe alternative to long-term use of a blood thinner that will provide a comparable reduction in risk of stroke?


Patient Success Stories

Linda Brancato

Linda Brancato, 67, is a retired retail manager who lives in Monroe, NY. She is an incredibly social “people-person” who loves being active, so when she started to experience lethargy and difficulty breathing in August 2019, she was referred to a cardiologist and diagnosed with Non-valvular atrial fibrillation (AFib.) With AFib, the upper chambers of the heart (the atria) beat irregularly instead of beating effectively to move blood into the ventricles. Most commonly, blood thinners are prescribed to thin the blood and make sure it moves through the body without clots.

Brancato went to several cardiologists and electrophysiologists to find out what other options were available to treat her AFib since she had reacted poorly to blood thinners. She was beginning to get discouraged when she was referred to electrophysiologist, Gunjan Shukla, MD, FHRS, at Good Samaritan Hospital, for a procedure he was performing called a Left Atrial Appendage Closure (LAAC) utilizing the WATCHMAN device. During this minimally invasive procedure, the WATCHMAN device is implanted into the left atrial appendage (LAA) of the heart. The self-expanding frame of the WATCHMAN seals off the LAA and acts as a filter for blood clots to prevent a stroke. This eliminates the need for blood thinners.

Brancato was encouraged to hear that there was an alternative treatment for her AFib and was immediately impressed with Dr. Shukla’s expertise and personalized care. “Dr. Shukla took the time to review my complete history before our appointment and was so knowledgeable and experienced with this procedure. He answered all of my specific questions and made me feel confident I had finally found the right doctor for me,” said Brancato.

The comprehensive team approach including cardiologist Sunandan Pandya, MD, FACC, and Valve Coordinator Suzanne Bartman, BSN, RN, CCRN, also made the process easy to navigate. “Suzanne Bartman went out of her way to make me feel comfortable. She listened to me and calmed my nerves. She gave me detailed information and I trusted her. The entire team made me feel special from start to finish,” said Brancato.

Brancato’s LAAC procedure was a success and she is feeling relieved to be off blood thinners. She is back to creating art for her four grandchildren and talking walks with her husband of 44 years. “I feel so blessed that these skilled doctors are here in our area, I was thrilled I was able to have this surgery so close to home. I cannot say enough good things about Good Samaritan Hospital and the LAAC procedure,” said Brancato.

Shukla, Gunjan
Cardiac Electrophysiology
Cardiovascular Disease
Zimmerman, John
Cardiac Electrophysiology
Cardiovascular Disease


Additional Team Members

Suzanne Bartman BSN, RN, CCRN
Valve Coordinator

Tina Strazza, MSN, RN
Director Invasive Cardiology