[Dynamic atriomyoplasty as a method extending F. Fontan's principle in the surgical treatment of complex congenital heart defects (an experimental study)].

The article discusses the data of an original complex experimental research dealing with the study of the possibilities of the method of dynamic cardiomyoplasty in surgical management of complex congenital heart diseases with critical obstructive lesions of the venous atrioventricular valve. An original method for the formation of a peculiar new pumping chamber into the system of pulmonary circulation is described. The hemodynamic efficacy of the operation in the immediate periods after its performance is thoroughly evaluated. Substantiated recommendations are given for the possible use of this method in the clinic in surgical treatment of this difficult contingent of patients.