Comparison of voltages between atria: differences in sinus rhythm and atrial fibrillation.

ABSTRACT:

Background

Ultra high-density mapping systems allow for comparison of atrial electroanatomical maps in unprecedented detail. Atrial scar determined by voltages and surface area between atria, rhythm and atrial fibrillation (AF) types was assessed.

Methods

Left (LA) and right atrial (RA) maps were created using Rhythmia HDx in patients listed for ablation for paroxysmal (PAF, sinus rhythm (SR) maps only) or persistent AF (PeAF, AF and SR maps). Electrograms on corresponding SR/AF maps were paired for direct comparison. Percentage surface area of scar was assigned low- (LVM, ≤ 0.05 mV), intermediate- (IVM, 0.05-0.5 mV) or normal voltage myocardium, (NVM, > 0.5 mV).

Results

Thirty-eight patients were recruited generating 96 maps using 913,480 electrograms. Paired SR-AF b

SUBMITTER: Bates AP 

PROVIDER: S-EPMC11016007 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature