new procedure for treatment of atrial fibrillation in patients with valvular heart disease

patients with valvular heart disease suffer from atrial fibrillation for more than 12 months after valve surgery and have a low probability of remaining in sinus rhythm. we performed an intra-operative procedure similar to surgical maze ііі procedure for conversion of this arrhythmia to sinus rhythm. we did this study to evaluate the efficacy of this procedure to restore the sinus rhythm in patients with valvular heart disease. 28 patients with valvular heart disease and chronic persistent atrial fibrillation underwent different combinations of valve surgery and concomitant reduction of left and right atrial size and resection of both atrial auricles in shahid madani cardiothoracic center from september 2004 to october 2008. the procedure for atrial fibrillation treatment was performed with cardiopulmonary bypass and after mitral valve replacement. there was one in-hospital death postoperatively because of respiratory failure, but no other complication till 6 months after the operation. out of 28 patients, 23 were in sinus rhythm one week after the operation, one patient had junctional rhythm after the operation that restored to sinus rhythm and 4 patients had persistent atrial fibrillation. during the 12-month follow up, atrial fibrillation was corrected in 82.14%. doppler echocardiography in these patients with sinus rhythm demonstrated good atrial contractility. this procedure on both atria is effective and less invasive than the original maze procedure to eliminate the atrial fibrillation, and can be performed in patients with valvular heart disease without increasing the risk of operation.