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No transplante de fígado, a preservação do segmento retro-hepático da veia cava durante a hepatectomia do receptor apresenta uma série de vantagens: diminuição do tempo de isquemia quente por eliminar a anastomose da veia cava infra-hepática, redução da necessidade da utilização de derivações veno-venosas e simplificação da cirurgia do re-transplante hepático. Em cães, os lobos hepáticos lateral direito e caudado são caprichosamente atravessados pela veia cava inferior, dificultando a completa "esqueletização" do vaso. No presente trabalho, os autores revisam a singular história do método do "piggy-back" experimental e clínico, e discutem a técnica da cirurgia em cães. During the recipient hepatectomy in liver transplantation, preservation of the retrohepatic segment of the inferior vena cava has several advantages: it decreases warm ischemia time by eliminating the infrahepatic caval anastomosis, eliminates the need for venovenous bypass and eases retransplantation. Removal of the liver of the dog without sacrificing the inferior vena cava has been considered impossible because of the intrahepatic course of the vena cava at the sites of entry of the hepatic veins. The following report reviews the history of the piggyback method, and discuss about the feasibility of the total removal of the liver without injury to the vena cava in the dog

Hepatectomia total com preservação da veia cava inferior: "piggy-back" experimental em cães