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2023 AF Symposium

Dr. Joseph Galvin, Dublin, Ireland

Live Case Presentation from Dublin, Ireland. Pulsed Field Ablation for AF Using a Multispline Catheter

The presenters of this live presentation were Drs. Joseph Galvin and Gabor Szeplaki from Mater Private Hospital in Ireland. They perform 800-900 ablations/year and have done 268 cases of Pulsed Field Ablation (PFA) using the Boston Scientific Farapulse system.

As we watched this live ablation, they used the optimized biphasic wave form for the PFA ablations. Dr. Szeplaki did the actual ablation while Dr. Galvin commented.

Dr. Gabor Szeplaki, Dublin, Ireland

No Lead Aprons

The first thing one noticed was that, instead of the typical Lead apron shields to protect against Fluoroscopy radiation, they were wearing what looked like plastic vests which were leadless. (Zero Gravity system by Biotronik.) These shields attach via a magnet to the operator who wears a vest with a magnet at the front.

66-Year-Old Female with Common Right Atrium

The patient was a 66-year-old woman who had developed symptomatic paroxysmal A-Fib three years ago. She had been taking Sotalol but tolerated it poorly. They also had tried dronedarone, but she had symptoms.

Her CHA2DS2-VASc score was 3. She had hypertension. Her left atrium was otherwise healthy. She had a somewhat unusual pulmonary vein anatomy with what looked like a huge common right ostium. They used general anesthesia rather than conscious sedation.

Ablation Procedure

NOACs (Novel Oral Anticoagulants) were discontinued the morning of the procedure.

A TEE (Transesophageal Echocardiogram) was used to make sure there was no thrombus (clot) in the heart.

They used Ultrasound to position the catheter to puncture the vein. In the heart they used a single transseptal puncture to access the left atrium. They used the Orion catheter for 3-D mapping and paced from the Coronary Sinus.

The mapping software was integrated into the Farapulse system in real time, which is a great help to the EPs. The catheter sheaths were transparent so that they could better see and eliminate bubbles on the catheters.

Farapulse catheter Open-Basket configuration

Farapulse catheter – Five Petal Flower configuration

Each vein to be ablated received four basket and four petal ablations rotating the catheter each time for better coverage. (For a more detailed description of the Farapulse system, see my 2020 report, Pulsed Field Ablation—Emerging Tech for Atrial Fibrillation.) 

They made sure that both exit and entrance block were achieved in each vein. As they ablated, the heart tissue on the screen changed from light red to dark red.

Even with the large common right ostium, they still used the 31mm catheter rather than the larger size. The patient was successfully ablated and returned to normal sinus rhythm.

Overall their results in their center are 96% vein isolation and 84% curable PVI.

Dr. Galvin commented that when they first started, PFA ablations were taking 6-7 hours. But now they are doing them in 40 minutes.

Editor's CommentsEditor’s Comments

PFA Ablation Easy, Safe and Effective: The Farapulse ablation protocol has become relatively easy and safe to do. The operators in Ireland seemed very proficient, confident, and experienced. For them this was no big deal and almost routine. This is great news for patients. 40 minutes is a very short time to perform an ablation. And with no complications.
PFA Not Yet Approved in U.S.―But Will Be Soon. PFA ablation is not yet approved in the U.S., but has been approved overseas and has been in use for some time. Panelists from Germany pointed out that PFA ablation is now done on an out-patient basis with no need to stay in a hospital overnight. This is all good news for U.S. patients with Atrial Fibrillation.
Transparent Radiation Shields Great Advance: And using these transparent shields to protect against radiation exposure is a huge advance for EPs doing ablations.

I’ve been in operating rooms and had to wear those lead aprons used today by most EPs. They are really heavy and wear you down by the end of the day. All too many EPs develop slipped disks or other back problems. And reducing or eliminating radiation exposure improves EPs health and peace of mind. Good news for EPs!

If you find any errors on this page, email us. Y Last updated: Saturday, August 12, 2023

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