Merheim Medical Center Cologne 1 article published in JoVE Medicine Normothermic Ex Vivo Kidney Perfusion for the Preservation of Kidney Grafts prior to Transplantation J. Moritz Kaths1,2, Vinzent N. Spetzler1, Nicolas Goldaracena1, Juan Echeverri1, Kristine S. Louis1, Daniel B. Foltys3, Mari Strempel4, Paul Yip5, Rohan John5, Istvan Mucsi1, Anand Ghanekar1, Darius Bagli6,7, Lisa Robinson2, Markus Selzner1 1Multi Organ Transplant Program, Department of Surgery, Toronto General Hospital, 2Division of Nephrology, The Hospital for Sick Children, Toronto, 3Department of General, Visceral & Transplant Surgery, University Medical Center Mainz, 4Department of Abdominal, Vascular & Transplant Surgery, Merheim Medical Center Cologne, 5Laboratory Medicine & Pathobiology, Toronto General Hospital, 6Departments of Surgery (Urology) & Physiology, The Hospital for Sick Children, Toronto, 7Developmental & Stem Cell Biology, The Hospital for Sick Children, Toronto The severe organ shortage has resulted in increased use of marginal kidney grafts for transplantation. This has triggered interest in alternative storage methods, since marginal grafts especially tolerate cold storage poorly. The technique of normothermic ex vivo kidney perfusion (NEVKP) represents a novel preservation method for kidney grafts prior to transplantation.