Objective
To study the extent of agreement in diagnosis (by p-RIFLE and KDIGO serum creatinine criteria) and risk factors of acute kidney injury (AKI) in pediatric diabetic ketoacidosis (DKA).
Method
A retrospective cohort study involving children aged ≤ 15 with DKA was conducted between January 2014 and December 2022. Inborn errors of metabolism, septic shock, and urinary tract disease were excluded. The primary outcome was the extent of agreement in diagnosis by p-RIFLE and KDIGO. The secondary outcomes were staging agreement, risk factors, complications, time to resolution of DKA, and hospital stay, including PICU.
Results
161 patients' data were enrolled. Mean (SD) age was 8.6 (3.7) years. Good agreement between p-RIFLE and KDIGO criteria for diagnosis of AKI was noted at admission (Kappa = 0.71, p = < 0.001; sensitivity of 100% and specificity of 62%), at 24 hours (Kappa = 0.73, p = < 0.001; sensitivity of 100% and specificity of 72.2%) and at discharge (Kappa = 0.70, p = < 0.001; sensitivity of 100% and specificity of 77%) and also noted for the staging of AKI at admission (Kappa = 0.81, p = < 0.001), at 24 hours (Kappa = 0.73, p = < 0.001) and at discharge (Kappa = 0.70, p = < 0.001). On multivariate analysis, age (≤ 10-year: aOR = 3.28, 95%CI 1.51–7.10) and the severity of DKA (moderate: aOR = 4.18, 95%CI 1.18–14.79; severe: aOR = 4.93, 95%CI 1.29–18.80) were independent risk factors for AKI at 24-hour by KDIGO. Cerebral edema (n = 6, 3.7%), hypoglycemia (n = 66, 41%), and hypokalemia (n = 59, 36.6%) were noted. There was no difference in the resolution of DKA and hospital stay in AKI vs. no-AKI groups.
Conclusion
p-RIFLE and KDIGO serum criteria showed good agreement in diagnosing and staging AKI in pediatric DKA.