Split liver transplant recipients do not have an increased frequency of acute kidney injury

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Abstract

Small series have suggested that split liver transplantation (SLT) has an increased frequency of peri-operative acute kidney injury (AKI). However, the optimal donor selection in this setting could have a favourable impact on renal outcomes. This was a retrospective single-centre study of 76 adults who underwent SLT (right extended lobe) and 301 adults who underwent elective full-size donation after brain death liver transplantation (FSLT). SLT recipients were less likely than unmatched FSLT recipients to develop AKI (≥stage 1 KDIGO criteria) (40.3% vs. 56.1%, P = 0.016) and had a reduced frequency of renal replacement therapy (11.8% vs. 21.9%, P = 0.049). In 72 pairs of SLT patients and propensity risk score-matched FSLT controls the incidence of AKI was not significantly different (40.3% vs. 47.2%, P = 0.473). However, SLT patients were less likely to require renal replacement therapy (11.1% vs. 23.6%, P = 0.078; adjusted OR 0.32; 95% CI 0.11-0.87, P = 0.026). There was no association between SLT and the development of chronic kidney disease (eGFR<60 ml/min/1.73 m(2) , log rank P = 0.534). In conclusion, SLT is not associated with an increased frequency of AKI. These observations support the postulation that the optimal donor status of SLT may result in less graft injury with renal sparing effects.

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