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ID 34782
file
creator
Uchida, Naomichi
subject
Atrial fibrillation
Electrophysiological study
Isolation
Pulmonary vein
Surgery
NDC
Medical sciences
abstract
Background: The pulmonary veins (PV) and posterior left atrium (LA) may contribute to the occurrence and maintenance of atrial fibrillation (AF). We evaluated whether simple epicardial electrophysiological mapping can predict elimination of chronic AF after the box PV isolation procedure.

Methods and Results: Using a computerized 48-channel mapping system, we performed intraoperative atrial mapping in 16 patients with chronic AF associated with mitral valve (MV) disease. Patients' ages ranged from 48 to 76 years (mean, 61.4 years). AF duration ranged from 1 to 16 years (mean, 7.5 +/- 5.4 years). Simple box PV isolation was performed during the MV operation. Regular and repetitive activation was found in the LA of 12 of 16 patients, and irregular and chaotic activation was found in both atria in 4 of 16 patients; 12 patients with regular and repetitive activation of the LA were treated by box PV isolation and the other 4 patients with irregular and chaotic activation in both atria did not recover sinus rhythm after this procedure. AF-free rate was significantly higher in patients with regular and repetitive activation of the LA (P < 0.01).

Conclusions: Box PV isolation was effective in the treatment of chronic AF associated with MV disease. Epicardial atrial mapping may predict elimination of AF after the box PV isolation. (Circ J 2012; 76: 852-859)
journal title
Circulation Journal
volume
Volume 76
issue
Issue 4
start page
852
end page
859
date of issued
2012
publisher
Japanese Circulation Society
issn
1346-9843
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
(c) All rights are reserved to the Japanese Circulation Society.
relation url
department
Graduate School of Biomedical Science