[Remote clinical results of treatment of atrioventricular nodal reciprocated with the use of novel and traditional methods of radiofrequency catheter ablation of slow part pathway of atrioventricular junction].

Remote results of radiofrequency catheter ablation (RFCA) - modification of "slow" part pathway of atrioventricular junction (AVJ) in patients with typical form of atrioventricular nodal reciprocal reciprocated tachycardia (AVNRT), carried out on the basis bi and monopolar recording of electrical activity of fibers of slow" part pathway of AVJ. Study participants were 104 patients (44 women) aged 21-86 years with typical form of AVNRT who had been subjected to primary RFCA procedure - modification of slow part pathway of AVJ. In group 1 (n=51) RCA RFCA was conducted on the basis of simultaneous monoand bipolar endocardial registration recording of new potential of "slow" part pathway of AVJ. In group 2 (n=53) RCA RFCA was done on the basis of bipolar registration of traditional potentials of "slow" part pathway of AVJ. Total period of follow up of patients was 32+/-11 months. According to data of control visits 1, 3, 6, 12, and 24 months after RCA RFCA for AVNRT based on collection of anamnesis, physical examination, registration of electrocardiogram and Holter monitoring none of the patients had recurrences of AVNRT in indicated periods of follow up. Method of mapping of fibers of "slow" part pathway of AVJ based on redislocation of destructive electrode in the zone of novel potential located at significant distance from compact part of AVJ differs from common approach and allows to carry out catheter RCA RFCA with minimal risk of impairment of atrioventricular conduction. Long term results of radiofrequency modification of "slow" part pathway of AVJ performed on the basis of registration recording of novel potential are comparable with results of traditional RCA RFCA technique in patients with AVNRT.