An improved window of interest for electroanatomical mapping of atrial tachycardia.

ABSTRACT:

Purpose

Diagnosis of atrial tachycardia (AT) with 3D mapping system remains challenging due to fibrosis or previous ablation. This study aims to evaluate a new electroanatomical mapping annotation setting using a window of interest adjusted at the end of the P wave (WOI_{p wave}) to identify the AT mechanism more accurately.

Methods

Twenty patients with successful ablation of left AT using navigation system CARTO3 were evaluated. Two maps for each patient were generated offline using either conventional settings of WOI (WOI_conv.) or WOI_{p wave}. Three investigators from two centres analysed the maps blindly.

Results

Mechanisms of AT were macroreentrant in 14/20 patients (70%) and focal in 6/20 (30%). WOI_{p wave} resulted in a signi

SUBMITTER: Mechulan A 

PROVIDER: S-EPMC8755667 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature