Surgical Prevention of Atrial Fibrillation in Patients With Rheumatic Mitral Valve Lesion and Left Atrium Enlargement

Prophylactic surgical ablation is performed to prevent AF in patients during mitral valve surgery. Ablation is performed by radiofrequency electrode or cryoprobe. Pulmonary veins, posterior wall of the left atrium will be isolated by the scheme box-lesion with additional lines to the mitral valve and appendage of left atrium.

in both groups cardiac rhythm will be controlled by a cardiomonitor