Objective. To identify simple and clinically accessible early predictors of graft function in children after living-related kidney transplantation. Materials and Methods. A retrospective analysis of 50 pediatric kidney transplantations performed from 2018 to 2025 was conducted. All transplants were obtained from first-degree related donors. The following parameters were analyzed: preoperative creatinine, hemoglobin, sodium, potassium levels, daily urine output in the first 24 hours after transplantation, and creatinine dynamics on postoperative days 1, 3, and 7. The prognostic significance of early diuresis and creatinine reduction was evaluated. Results. All patients demonstrated pronounced early diuresis (5–8 L/day) during the first postoperative day. A consistent decrease in serum creatinine was observed: 495 ± 30 μmol/L on day 1, 215 ± 18 μmol/L on day 3, and 97 ± 9 μmol/L on day 7. Patients with more intensive early diuresis showed faster normalization of creatinine levels. No cases of delayed graft function or primary non-function were observed. Conclusion. Daily urine output in the first 24 hours and the rate of serum creatinine reduction within the first 7 days are reliable and easily accessible early predictors of adequate graft function in children after living-related kidney transplantation.

Pediatric kidney transplantation, early graft function, predictors, diuresis, creatinine

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