Randomized trial comparing pulmonary alterations after conventional with venovenous bypass versus piggyback liver transplantation
Maria Rita Montenegro Isern, Paulo Celso Bosco Massarollo, Eliane Maria de Carvalho, Carlos Eduardo Sandoli Baía, Jorge Kavakama, Poliana de Andrade Lima, Sérgio Mies – 26 February 2004 – During the anhepatic phase of conventional liver transplantation (LT), the inferior vena cava (IVC) is cross‐clamped and venovenous bypass (VVB) is usually indicated for diversion of IVC and portal blood flow. VVB can theoretically lead to pulmonary complications due to the contact of the blood with the surfaces of the circuit. In the piggyback method, preservation of the IVC avoids VVB.