Abstract

PurposeOver the last few years, transplant centers have started to use various intraoperative renal replacement therapy (ioRRT) modalities during liver transplantation (LT) in patients with pre-existing renal impairment. Here, we present a study on the safety and clinical outcomes of intraoperative hemodialysis (ioHD) performed using a mobile dialysis system during LT. Patients and methodsWe retrospectively analyzed 102 adult patients undergoing LT with ioHD; pre-existing renal failure and/or intraoperative metabolic derangement were ioHD treatment indications. ResultsOur study cohort consisted of three groups: LT with preoperative serum creatinine (sCr) ​< ​2 ​mg/dL (Group 1:n ​= ​22), LT with preoperative sCr ≥2 ​mg/dL (Group 2:n ​= ​73), and simultaneous liver-kidney transplantation (Group 3:n ​= ​7). Among the procedures, 30% were re-transplantations. The mean calculated Model for End-stage Liver Disease score in Group 2 was 39.2, and 67% of patients were hospitalized in the intensive care unit. Patients in Group 1 were less acutely ill but developed severe intraoperative derangements and, therefore, underwent urgent ioHD intraoperatively. However, it was delayed when compared to Group 2. All groups achieved post-reperfusion potassium levels <4 ​mmol/L and a decrease in central venous pressure. No serious procedural complications occurred. Post-reperfusion syndrome occurred in 12.7% of patients. Elevated mortality was likely due to the high illness severity in the cohort. ConclusionsPerforming ioHD with a mobile dialysis system during LT was safe and effective, while being easier to perform than continuous techniques. Its effect on intra- and postoperative outcomes should be addressed in a study with a control group.

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