Follow-up study results from the landmark Machine Preservation Trial, published in The New England Journal of Medicine, show that 3-year graft survival is significantly greater in all transplanted kidneys machine perfused in the LifePort® Kidney Transporter, compared with those stored in a traditional box of ice (static cold storage) (91% vs. 87%, p=0.04). The graft survival difference at three years was most pronounced for kidneys from expanded criteria donors (86% vs. 76%, p=0.01). Expanded criteria donors are those over the age of 60 or those over 50 with health conditions such as high blood pressure, stroke or poor kidney function. Over the past decade, kidney donations from expanded criteria donors have increased considerably and today comprise nearly half of the deceased donor kidneys transplanted in the US and EU.2,3
When the results are analysed by donor type, they show that 3-year graft survival after machine perfusion compared to static cold storage was also significantly superior for kidneys donated after brain death (91% vs. 86%, p=0.02).
Machine-perfused kidneys with delayed graft function (DGF) a delay in the recovery of renal function that requires dialysis within the first week after transplantation4 had better 3-year graft survival (77%) than cold stored kidneys with DGF (62%).
“It is very interesting to see that the benefits in graft survival seen in this landmark study at 1 year5 with machine perfusion persist after 3 years compared to traditional cold storage methods,” said lead author Cyril Moers, University Medical Center Groningen, The Netherlands. “Since a growing number of organs available for transplantation come from older donors or from people with more complex medical conditions, it is particularly welcome that machine perfusion offers significant improvements for 3-year graft survival in kidneys from these donors and is a real step forward in kidney transplantation.”
LifePort is a device that preserves a donated kidney before it is transplanted. Designed to provide a sealed and sterile environment from the time of recovery until transplantation, LifePort gently pumps a specifically formulated solution through the kidney. This is referred to as ‘machine perfusion’ and is an important contrast to the traditional method of storing and transporting donated kidneys – packed in a box of ice (static cold storage).
Organ Recovery Systems (www.organ-recovery.com) is the world’s leading provider of machine perfusion products to the transplant community, supporting over 120 transplant programs worldwide with its LifePort Kidney Transporter and organ preservation and flush solutions.
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1. Moers C, Pirenne J, Paul, A, Ploeg RJ. Machine perfusion or cold storage in deceased-donor kidney transplantation. N.Eng J Med 2012;366:770-1.
2. Eurotransplant data provided on request.
3. OPTN. Available at http://optn.transplant.hrsa.gov/ContentDocuments/PG_Scorecard_090611.xls#.
4. Johnston TD, Thacker LR, Jeon H et al 5. Moers C, Smits JM, Maathuis, MJ et al. Machine perfusion or cold storage in deceased-donor kidney transplantation. N Engl J Med 2009;360:7-19.