Atrial extrasystoles enhance low-voltage fractionation electrograms in patients with atrial fibrillation.

ABSTRACT:

Background and aims

Atrial extrasystoles (AES) provoke conduction disorders and may trigger episodes of atrial fibrillation (AF). However, the direction- and rate-dependency of electrophysiological tissue properties on epicardial unipolar electrogram (EGM) morphology is unknown. Therefore, this study examined the impact of spontaneous AES on potential amplitude, -fractionation, -duration, and low-voltage areas (LVAs), and correlated these differences with various degrees of prematurity and aberrancy.

Methods and results

Intra-operative high-resolution epicardial mapping of the right and left atrium, Bachmann's Bundle, and pulmonary vein area was performed during sinus rhythm (SR) in 287 patients (60 with AF). AES were categorized according to their prematurity index (>25% sh

SUBMITTER: van Schie MS 

PROVIDER: S-EPMC10401323 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature