Spatial and temporal variability of rotational, focal, and irregular activity: Practical implications for mapping of atrial fibrillation.

ABSTRACT:

Background

Charge density mapping of atrial fibrillation (AF) reveals dynamic localized rotational activation (LRA), irregular activation (LIA) and focal firing (FF). Their spatial stability, conduction characteristics and the optimal duration of mapping required to reveal these phenomena and has not been explored.

Methods

Bi-atrial mapping of AF propagation was undertaken using AcQMap (Acutus Medical) and variability of activation patterns quantified up to a duration of 30 s. The frequency of each pattern was quantified at each unique point of the chamber over two separate 30-s recordings before ablation and R² calculated to quantify spatial stability. Regions with the highest frequency were identified at increasing time durations and compared to the result over

SUBMITTER: Pope MT 

PROVIDER: S-EPMC9290790 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature