[The use of transvenous destruction of the atrioventricular junction for correcting hemodynamic disorders caused by ventricular-atrial conduction].

Abstract

The authors studied disorders of central and intracardiac hemodynamics occurring in electrostimulation of the ventricles attended by retrograde stimulation of the cardia. The experiments were conducted on 8 anesthetized dogs in whom, after disclosure of intact ventriculoatrial conduction, transvenous destruction of the atrioventricular junction was performed. Clinical study was carried out in 12 patients with continuous electrostimulation of the ventricles which caused retrograde stimulation of the atria, and in 19 patients with supraventricular tachyarrhythmia who were subjected to transvenous endocardial destruction of the atrioventricular junction. Due to the development of severe hemodynamic disorders in electrostimulation of the ventricles attended by retrograde stimulation of the atria the last named condition should be changed to ventriculoatrial dissociation which promotes growth of contractile activity and stroke volume of the left ventricle. Transvenous destruction of the atrioventricular junction is a reliable method for blocking retrograde conduction.