Localized rotors and focal impulse sources within the left atrium in human atrial fibrillation: A phase analysis of contact basket catheter electrograms.

ABSTRACT:

Background

Consistent detection of rotor(s) and/or focal impulse(s) of atrial fibrillation can using a 64-pole basket catheter remain unclear.

Methods and results

Intracardiac left atrial electrograms were recorded, prior to ablation, in 20 patients with atrial fibrillation. Unipolar electrograms, filtered at 0.1-300 Hz, were recorded and exported for an offline phase analysis. From the cohort, 8 of the 20 patients had analyzable data. Localized rotors were identified in 3 of these patients, with focal impulses detected in 4 patients.

Conclusion

Localized rotors and focal impulses can be identified on phase maps of atrial fibrillation in a small number of patients.

SUBMITTER: Sasaki N 

PROVIDER: S-EPMC4823606 | biostudies-literature | 2016 Apr

REPOSITORIES: biostudies-literature