Does Donor Kidney to Recipient Body Weight Ratio Influence Long-Term Outcomes of Living-Donor Kidney Transplantation?

Abstract This study evaluated the effect of the donor kidney to recipient body weight (Kw/Rw) ratio on long-term graft function and survival. We investigated retrospectively whether there was any association between Kw/Rw ratio and long-term graft survival and function after a follow-up of >10 years. We studied a consecutive series of 123 adult-to-adult living kidney transplants. According to the Kw/Rw ratio, patients were divided into 3 groups: “low” (Kw/Rw P = .394 and 0.620, respectively). Graft survival rates at 5 and 10 years after transplantation were significantly lower in the “low” group. We observed a significant association between Kw/Rw ratio and graft survival ( P = .018). The Kw/Rw ratio is an important factor for long-term graft survival and early graft function. However, it did not significantly affect subsequent renal function.