[Prophylaxis of atrioventricular block in surgery of reentry tachycardia]. / Profilaktika narusheniia atrioventrikuliarnoi provodimosti pri ustranenii rientri takhikardii.

Experience of treatment of 85 patients with reentry tachycardia of atrioventricular node was analyzed. In 10 patients (first group) dottal applications directed from coronary sinus ostium toward atrioventricular bundle (AVB) were applied; in 75 (second group)--from the tricuspid valve ring deep inside atrium on the coronary sinus ostium. Temporary disorder of atrioventricular conductivity of different degree was observed in 3 patients of first group and in 1--of the second group, in whom applications were plotted in the middle of distance between coronary sinus ostium and AVB. In one observation several commissures were situated between electrocardiograms of atrium and ventriculus, not permitting to reveal trustworthy the presence of AVB potential.

[An original method of demolition of re-entry tachycardia of atrioventricular node]. / Original'nyi sposob ustraneniia rientri takhikardii predserdno-zheludochkovogo uzla.

In 75 patients with reentry tachycardia of atrioventricular node the dotted applications were performed on the ishtmus of coronal sinus level, right from the tricuspid valve ring deep to the atrium. The ratio of amplitudes of atrial and ventricular commissures was in limits of 1:10-11:10. After each application the possibility of tachycardia occurrence was tested. It took one procedure to perform to climinate tachycardia in all the patients. The applications quantity had constituted 5.5 +/- 3.8 at average. Roentgenexposition time had constituted--(10.2 +/- 3.8) min. The atrioventricular conduction disorder was not observed. Recurrency of arrhythmia was not noted in 5 months--4 years follow-up.