We thank Doctors Khalid, Zaidi, and Allham for their insightful comments. 1 We described that kidneys from donors with significant acute kidney injury caused by rhabdomyolysis can achieve excellent graft function, even when the kidneys are anuric or discolored. 2 We ascribe the excellent outcomes we reported to the relatively young age of the donors (mean age of 24.5 years), the cause of the donors' death (12 of 15 donors died as a result of motor vehicle accidents), and the absence of chronic injury (>10% glomerulosclerosis, interstitial fibrosis, tubular atrophy, arteriolar hyalinosis, and fibrous intimal thickening) on pre-implant biopsies. The mean kidney donor risk index of the donors was 0.88 ± 0.10 (range, 0.73-1.11), which is rather good. The suggested treatment for rhabdomyolysis includes prevention and treatment of the underlying disease (eg, muscle damage, hypernatremia, and hypokalemia), volume expansion, and urinary alkalinization, but the effect of these treatments is limited. We recommend that the most effective means for maintaining donor kidney function is to complete organ procurement as soon as possible such that the exposure time to a high myoglobin level is limited.In our report, only five donors had obvious casts on histological evaluation. These five donors had a similar 1-year estimated glomerular filtration rate compared to the other donors (70.0 ± 13.3 vs 67.2 ± 16.2 mL/min/1.73 m 2 , P = .64). Thus, it seems that myoglobin casts had no obvious adverse impact on the renal graft function.Kidneys with significant myoglobin casts could show a discolored appearance (from brown to glossy black). 2 If the rhabdomyolysis donor has a peak serum creatinine kinase level higher than 20 000 U/L, and has tea-colored urine, the kidneys are likely to have a black appearance after in situ cold perfusion.We recommend that kidneys from rhabdomyolysis donors should be preserved by hypothermic machine perfusion. This may ameliorate the accompanying damage of slow or delayed graft function of these kidneys. Moreover, pump parameters are helpful for determining the acceptability of kidneys, especially when the donor is anuric.As chronic kidney injury (high Remuzzi score) is the only risk factor for primary non-function of a renal graft, 3 when there is acute injury of a donor kidney, such as caused by rhabdomyolysis, significant chronic injury of the donor kidney should be excluded by pre-implant biopsy.
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Xiao-pengYuan REFERENCES 1. Khalid U, Zaidi A, Allham M. Correspondence to: kidney transplantation from donors with rhabdomyolysis and acute renal failure. Clin Transplant. 2017;31:e.13021. https://doi.org/10.1111/ctr.13099. 2. Chen CB, Zheng YT, Zhou J, et al. Kidney transplantation from donors with rhabdomyolysis and acute renal failure. Clin Transplant. 2017;31:e.13021. https://doi.org/10.1111/ctr.13021. 3. Kosmoliaptsis V, Salji M, Bardsley V, et al. Baseline donor chronic renal injury confers the same transplant survival disadvantage for DCD and DBD kidneys. Am J Transplan...