Key result
Focal pulsed field ablation may effectively treat para-Hisian atrial tachycardias via myocardial tissue selectivity.
Why the study?
Para-Hisian atrial tachycardias are challenging to ablate due to proximity to the conduction system and high risk of AV block with thermal ablation.
Case Report
Pulsed field ablation may offer a safer alternative for ablating para-Hisian atrial tachycardias due to its myocardial tissue selectivity, potentially reducing the risk of atrioventricular block.
Answers are grounded in this paper and cite their sources.
PFA may reduce AV block risk in para-Hisian AT ablation; leaves open its role pending prospective confirmation.
Para-Hisian atrial tachycardias (AT) remain challenging ablation targets because of their proximity to the cardiac conduction system. Contemporary thermal ablation in this anatomical region has been associated with a reported risk of permanent atrioventricular (AV) block of up to 14%, depending on the ablation approach (1) (2) (3). Pulsed field ablation (PFA) is a novel electroporation-based energy source with preferential myocardial tissue selectivity (4) (5) and may therefore offer advantages in anatomically sensitive regions.
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Lucius et al. (2026) conducted a case report in Para-Hisian atrial tachycardia. Pulsed field ablation was evaluated. Pulsed field ablation may offer advantages for treating para-Hisian atrial tachycardias due to its preferential myocardial tissue selectivity.
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