R S Lemos

Federal University of Pernambuco, Arrecife, Pernambuco, Brazil

Are you R S Lemos?

Claim your profile

Publications (2)1.9 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Orthotopic liver transplantation is a widely used procedure for the treatment of irreversible liver diseases for which there is no possibility of medical treatment. When this procedure is performed by the conventional technique, the retrohepatic vena cava is removed along with the native liver. The inferior vena cava (IVC) remains clamped until the revascularization of the graft, and in this period there is a reduction in the venous return, which may induce a fall by up to 50% in the cardiac output with hemodynamic instability and a fall in renal perfusion pressure. The use of a portal-femoral-axillary venovenous bypass system, in which the blood from the femoral and portal veins returns to the heart via the axillary vein propelled by a centrifugal pump, is intended to minimize the effects of the IVC clamping. In the piggyback (PB) technique, the native liver is removed and the IVC of the recipient is preserved and only partially clamped. We have employed both techniques without the use of venovenous bypass for 10 years. The objective of this study was to compare the results obtained from the use of the two techniques.
    Transplantation Proceedings 05/2011; 43(4):1327-33. DOI:10.1016/j.transproceed.2011.03.061 · 0.95 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: The double piggyback technique has been proposed for domino liver transplantation. To make this possible, it is necessary to reconstruct the venous outflow of the domino liver graft on the back table. The authors describe the technical details of this procedure in three consecutive cases. A deceased donor cava-iliac bifurcation segment was used. The iliac veins were anastomosed to the ostia of the right and middle-left hepatic veins, and the graft cava vein was anastomosed to the ostium of the three hepatic veins of the recipient. In all cases anatomic compatibility was observed; the outcome of the patients was satisfactory.
    Transplantation Proceedings 05/2008; 40(3):811-3. DOI:10.1016/j.transproceed.2008.02.034 · 0.95 Impact Factor