[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.

[Surgical treatment of supraventricular tachycardias in children]. / Khirurgicheskoe lechenie supraventrikuliarnykh takhikardii u detei.

The paper deals with the results of surgical treatment in 19 children with supraventricular tachycardias. Eighteen patients were found to have the Wolff-Parkinson-White syndrome and one presented with ectopic right atrial tachycardia. The accessory pathways in the free wall and anterior septum in the presence of the Wolff-Parkinson-White syndrome were eliminated on the working heart, whereas those in the posterior septum were removed during extracorporeal circulation via endocardial access. Ectopic right atrial tachycardia was arrested by arrhythmogenic area resection in the right atrium during extracorporeal circulation. A positive result of the operation was achieved in 17 of the 18 patients. At day 2 of postsurgery, one patient developed recurrent tachycardia that was eliminated during a repeated operation. Which optimal method should be chosen to remove accessory pathways is discussed in the paper.

[Surgical treatment of supraventricular tachycardia]. / Khirurgicheskoe lechenie supraventrikuliarnoi takhikardii.

Surgical treatment of supraventricular tachycardia was performed in 61 patient, including the 52--with additional atrio-ventricular connections. Arrhythmia was liquidated in 57 (93.4%) patients. Hospital lethality was 1.7%.