This study evaluates the safety and efficiency of surgical prevention of atrial fibrillation in patients with valvular heart disease and left atrium enlargement
Preservation or appearance of AF(atrial fibrillation) after mitral valve surgery substantially reduce the number of excellent and good results of the operation in the long-term period, causing circulatory insufficiency, increased pulmonary hypertension, increasing the risk of thromboembolic events and stroke. Significant predictors of AF after surgery are the initial size of the left atrium more than 6.0 cm, stenotic lesions and rheumatic genesis of mitral defect. 80% of patients in this group had AF during the first year after operation.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
SINGLE
Enrollment
40
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
MeshalkinRI
Novosibirsk, Russia
composite outcome measure of complications
Time frame: up to 1 year
number of participants with freedom from AF according to the long-term ECG monitoring
Time frame: 1 year
transport function of the left atrium according to TTE (transthoracic echo)
Time frame: 1 year
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