Perinephric Hematoma Size is Independently Associated with the Need for Urological Intervention in Multisystem Blunt Renal Trauma

Purpose: We examined radiographic predictors of intervention for blunt renal trauma independent of AAST-OIS (American Association for the Surgery of Trauma-Organ Injury Scale).Materials and Methods: A total of 328 patients with blunt renal trauma from October 2004 to December 2014 were identified for analysis. Hospital records and diagnostic imaging were reviewed to identify the need for urological intervention, including angiographic embolization, nephrectomy, renorrhaphy, ureteral stenting or percutaneous drainage. Factors examined included patient age, gender, length of stay, ISS (Injury Severity Score), AAST-OIS, laceration location, length and number, perinephric hematoma characteristics, intravascular contrast extravasation and devitalized segment status. Descriptive statistics and binary logistic regression were performed as appropriate.Results: Mean patient age was 37.0 years and mean ISS was 31.7. A total of 31 urological interventions were required in 27 patients (8.2%), including ureteral stent...