Omnipolar Versus Bipolar Electrode Mapping in Patients With Atrial Fibrillation Undergoing Catheter Ablation.

ABSTRACT:

Background

Peak-to-peak bipolar voltage varies with electrode orientation, fractionation, and collision events. Novel, omnipolar mapping is less dependent on electrode orientation but has limited data in humans.

Objectives

This study sought to compare bipolar peak-to-peak voltage with omnipolar maximum voltage (V_max) during sinus rhythm in the left atrium of patients with persistent (PerAF) or paroxysmal atrial fibrillation (PAF).

Methods

Baseline voltage maps were generated with bipolar and omnipolar mapping in 20 patients undergoing de novo catheter ablation for PerAF or PAF and 9 patients with known scar from prior cardiac surgery, to validate voltage-based scar approximations. Low voltage was defined as <0.5 mV and scar <0.1 mV. Mean voltage was compare

SUBMITTER: Karatela MF 

PROVIDER: S-EPMC11967559 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature