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Inferior long-term graft survival after end-to-side reconstruction for two renal arteries in living donor renal transplantation.
PloS One 2018
Living donor kidneys with two arteries can be revascularized using various techniques depending on anatomy. We hypothesized that the revascularization technique could impact long-term outcomes. We retrospectively analyzed 1714 living donor renal transplants at our institution between 1999 and 2015. Three hundred and eleven kidneys had dual arteries, and these were categorized into 5 groups; end-to-side (n = 18), inferior epigastric artery (n = 21), direct anastomosis (n = 65), side-to-side (n = 126) and ligated (n = 81). We then compared the outcomes with that of a control group (single artery, n = 1403) using Kaplan-Meier and Cox regression analyses. Cox regression was adjusted by age, sex and race/ethnicity of donor and recipient, side of kidney, transplant period and recipient surgeon. Compared to the control group, the end-to-side group had increased all-cause graft loss (10 years: 77.2% vs 24.5%, adjusted hazard ratio [aHR] 3.02, 95% confidence interval [CI] 1.30-7.03, p = 0.010) and death-censored graft loss (10 years: 82.0% vs 55.9%, aHR 4.17, 95% CI 1.63-10.68, p = 0.003), whereas the other groups did not. Our study shows that 10-year overall survival and death-censored graft survival were significantly worse for end-to-side arterial reconstruction than for other techniques. Alternative techniques to the end-to-side method should be used for accessory arteries that require revascularization.
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