Predictors of Conservative Management Failure in Pediatric Renal Trauma: National Trauma Database Insights

This study aimed to evaluate contemporary management strategies of pediatric renal trauma, focusing on the failure of conservative management and identifying its predictors.

The National Trauma Database (2018-2021) was queried for pediatric patients (≤18 years) with renal injury, identified via AIS codes aligned with the AAST kidney injury grading system. Urological surgical procedures were identified via ICD-10 Procedure Codes. Patients were categorized into immediate surgical management (within 4 h), conservative management (no surgery), and failed conservative management (surgery after 4 h). Demographics, injury characteristics, and clinical data were analyzed using descriptive and univariate statistical analyses (Wilcoxon Rank Sum, Chi-square, Odds Ratios).

Of 7266 pediatric renal trauma patients, most were white (63.4 %) males (69.1 %), aged 12-18 (76.6 %), suffering from unintentional blunt trauma (86.9 %). Most (n = 6610, 95 %) received conservative management; however, 4.5 % (n = 298) failed. Common surgical interventions included ureteral stent placement (n = 200, 59 %), renal IR procedures (n = 44, 13 %), and nephrectomy (n = 33, 9.7 %). Nephrectomy rates at low AAST kidney injury grades (I-II) were higher with upfront surgical management (n = 7, 3.5 %) than with failed conservative management (n = 0). Predictors of failed conservative management included higher Injury Severity Score (ISS) and higher AAST kidney injury grades (III-V) (p < 0.05).

Conservative management failed in 4.5 % of paediatric renal trauma cases, associated with higher AAST kidney injury grade and ISS. Upfront surgical management correlated with a higher nephrectomy rate at lower injury grades compared to failed conservative management. Refinement of pediatric trauma protocols is needed for optimal care.

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