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About PFA therapy

Non-thermal mechanism of action for cardiac ablation

Unlike thermal cardiac ablation methods, pulsed field ablation (PFA) therapy uses short bursts of electrical pulses to treat atrial fibrillation (AFib). The goal of PFA therapy is to isolate and target specific characteristics of cardiac tissue for irreversible electroporation (IRE), inducing cell death and durable lesions using a non-thermal energy source.


PFA preferentially electroporates cardiomyocytes1

PFA preferentially ablates cardiac cells due to the lower damage threshold for cardiomyocytes, minimizing the risk of collateral injury to adjacent structures. While cardiomyocytes are more susceptible to PFA, other tissue and cell types are more resistant and can remain uninjured despite exposure to the field.

Illustration of cardiomyocytes ablated.

Irreversible electroporation2

Unlike thermal ablation that causes cell death by local tissue temperature change, PFA applies ultra-rapid electrical pulses above a tissue cell’s specific electrical threshold, destabilizing the cell membrane and forming nanoscale pores, resulting in cell death.

Illustration of electroporation chart.

Reversible electroporation can occur if pores are not large or durable enough to cause permanent cell death, but could show immediate loss of intracardiac electrograms. This could be perceived as acute isolation through cardiac stunning without achieving the irreversible electroporation needed for durable lesions.

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CONTINUE LEARNING

PFA training

Discover training sessions and interactive learning on the EDUCARE training platform to enhance your knowledge of FARAPULSE and PFA therapy.


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EXAMINE THE EVIDENCE

PFA clinical data

With more published clinical evidence than any other PFA system, FARAPULSE is dedicated to transforming the treatment of AFib.


References:
1. Reddy VY, Neuzil P, Koruth JS, et al. Pulsed field ablation for pulmonary vein isolation in atrial fibrillation. J Am Coll Cardiol. 2019 Jul 23;74(3):315-26.
2. Kotnik T, Kramar P, Pucihar G, et al. Cell membrane electroporation-Part 1: The phenomenon. IEEE Electrical Insulation. 2012;28(5):14-23.