Key result
Chemical ablation into the vein of Marshall might be a more beneficial treatment for biatrial tachycardia than Bachmann bundle ablation by avoiding interatrial conduction delay.
Why the study?
Biatrial tachycardia is a rare arrhythmia where identification of the re-entry circuit is often complicated, and Bachmann bundle ablation risks interatrial conduction delay and left atrial appendage isolation.
What is the optimal mapping and ablation strategy for biatrial tachycardia?
What is the optimal mapping and ablation strategy for biatrial tachycardia?
Chemical ablation of the vein of Marshall, guided by ultrahigh-resolution one-chamber mapping, may be preferable to Bachmann bundle ablation for treating biatrial tachycardia to prevent interatrial conduction delay.
Single-chamber LUMIPOINT mapping aids BiAT diagnosis; leaves open Bachmann bundle ablation safety and conduction effects.
Biatrial tachycardia (BiAT) is a rare arrhythmia, and identification of the re-entry circuit is often complicated. By creating an activation map of the right atrium, left atrium, and coronary sinus as a single chamber, the LUMIPOINT module of the Rhythmia mapping system (Boston Scientific, Marlborough, MA, USA) can be used in real time to make an accurate diagnosis. Ablation of the Bachmann bundle is a feasible way to terminate BiAT, but might cause interatrial conduction delay and electrical isolation of the left atrial appendage. Chemical ablation into the vein of Marshall might be the more beneficial treatment, avoiding any potential interatrial conduction delay.
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Mizuno et al. (2023) studied Biatrial tachycardia (BiAT). Chemical ablation into the vein of Marshall vs. Ablation of the Bachmann bundle was evaluated. Chemical ablation into the vein of Marshall might be a more beneficial treatment for biatrial tachycardia than Bachmann bundle ablation by avoiding interatrial conduction delay.
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