Immediate Results of Surgical Treatment of Atrial Fibrillation with Mini Maze and Maze IV Techniques

Daniil I. Volkov, Dmitrii I. Buyankov, Dmitrii N. Gorbunov, Yurii V. Gross, Alla R. Khaliulina, Dmitrii B. Drobot, Valerii A. Sakovich

Federal center of cardiovascular surgery, Krasnoyarsk, Russia

Date, time and location: 2018.05.25 13:30, Exhibition area, 1st Floor. Zone – A

Abstract

PURPOSE: to compare immediate results of surgical treatment of AF with mini Maze(MM) and Maze IV(MIV) techniques using various sources of energy.

METHODS:From January 2011 to February 2017, surgical treatment of AF was carried out in 220 patients. All the patients were divided into two groups according to the technique of surgical treatment of AF. In the first group (n = 80) RFA with MM was used, and in the second one (n = 60) with M IV. Average age of patients was 58.4 ± 5.9. The majority of patients 103 had the III NYHA; 65 of them were in the first group, and 38 in the second. 

RESULTS:Mortality 0%. Hemorrhage, which needed re-sternotomy, was seen in one case (0.7%). On discharge, sinus rhythm was registered in 91.2% of patients who had been treated with MM, and in those who had been treated with M IV in 91.6%. We operated on another 80 patients with the same techniques of AF surgical treatment using cryo ablation. The patients were divided into two groups: in the first group (n = 70) MM was used, in second group (n = 10) we applied M IV.

Hospital mortality made up 0%. On discharge, sinus rhythm was registered in 94.2% of patients who had been treated with MM, and in those who had been treated with M IV – in 100.0%.

CONCLUSIONS:Despite the invasiveness of these techniques, which increase the time of AC and aortal occlusion, operative management of AF is so far the most effective method of treatment.Our data showed a high degree of freedom from AF on discharge (91.6%), especially in cryo ablation (100%). There is no significant difference between the results of treatment with MM and M IV but a wider use of cryo ablation allows achieving better results in comparison with radio frequency ablation.