Ablation of atypical atrial flutters using ultra high density-activation sequence mapping.

ABSTRACT:

Purpose

The purpose of this study was to evaluate ultra high density-activation sequence mapping (UHD-ASM) for ablating atypical atrial flutters.

Methods

For 23 patients with 31 atypical atrial flutters (AAF), we created UHD-ASM.

Results

Demographics age = 65.3 ± 8.5 years, male = 78%, left atrial size = 4.66 ± 0.64 cm, redo ablation 20/23(87%). AAF were left atrial in 30 (97%). For each AAF, 1273 ± 697 points were used for UHD-ASM. Time to create and interpret the UHD-ASM was 20 ± 11 min. For every AAF, the entire circuit was identified. Thirty (97%) were macroreentry. AAF cycle length was 267 ± 49 ms, and the circuit length was 138 ± 38 mm (range 35-187). Macroreentry atrial flutters took varied pathways, but each had an area of slow conduction (ASC) averaging 16 ± 

SUBMITTER: Winkle RA 

PROVIDER: S-EPMC5325851 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature