[Left atrial reduction. A new concept in surgery for chronic atrial fibrillation].
OBJECTIVE
Mitral valve disease often is accompanied by chronic atrial fibrillation, especially when the left atrium is enlarged. Mitral valve surgery alone cannot resolve the arrhythmia in most cases. Several surgical techniques have been proposed. We have used surgical left atrial reduction and pulmonary vein isolation to eliminate chronic atrial fibrillation associated with mitral valve disease. The aim of this paper is to report our experience with this new surgical concept.


METHODS
Twenty-three patients (18 women and 5 men, mean age 44.1 14.7 years) with mitral valve disease and chronic atrial fibrillation for more than 3 months underwent surgery. Mitral valvuloplasty was performed in 11 cases, and mitral valve replacement in 12. Left atrial reduction was used to eliminate chronic atrial fibrillation in all cases.


RESULTS
There was no operative mortality. Three patients (13%) had recurrent atrial fibrillation between postoperative days 6 and 8. No atrioventricular conduction disturbances were observed. An important reduction in left atrial size was evident on echocardiography (4.8 0.77 vs. 8.1 1.47 cm, p < 0.01). In 3 to 36 months of follow-up (13.9 11 months), all patients preserved sinus rhythm.


CONCLUSIONS
Left atrial reduction seems to be an effective and easily applied alternative method for treating mitral valve disease with chronic atrial fibrillation.
García-Villarreal
Ovidio A
OA
Departamento de Cirugía Cardiotorácica. Hospital Regional N.o 34, IMSS. Monterrey. Nuevo León. México. ovidio@voila.fr
Gouveia
Amadeu B
AB
González
Roberto
R
Argüero
Rubén
R
D000328:Adult; D001281:Atrial Fibrillation / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery*; D006348:Cardiac Surgical Procedures; D002908:Chronic Disease; D004452:Echocardiography; D005260:Female; D006325:Heart Atria / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000601:surgery; D008944:Mitral Valve Insufficiency / Q000150:complications; D011667:Pulmonary Veins / Q000601:surgery