Effects of the electrophysiological mechanisms of atrial fibrillation on the extent of surgical intervention

The objective of the study was to assess the efficacy of various approaches for surgical treatment of atrial fibrillation (AF), depending on the electrophysiological mechanisms. A total of 423 patients with various forms of AF resistant to antiarrhythmic drug therapy were surveyed. All patients underwent intracardiac electrophysiological study. Depending on the electrophysiological forms of AF, the type of surgical treatment for each patient was selected. Electrophysiological detection of AF provides a way to differentiate the approaches for catheter treatment. Catheter treatment of focal AF is based on radiofrequency isolation of the arrhythmogenic region. In the case of detection of deceleration areas (arrhythmogenic zones) in the myocardium of the left atrium contributing to the development of the mechanism of reentry, performance of additional defragmentation of this section is necessary.