Ligation, autoplasty of the inferior vena cava above the renal veins and reverse portocaval anastomosis

In search of optimal methods of surgical interventions on the inferior vena cava above the renal veins, we experimentally tried the methods of ligation of the posterior vena cava above the renal veins, the method of autoplasty, and the imposition of a reverse portocaval anastomosis in various versions.