Logan Zemp1, Uday Mann1, Keith F Rourke2. 1. Division of Urology, Northern Alberta Urology Centre, University of Alberta, Edmonton, Alberta, Canada. 2. Division of Urology, Northern Alberta Urology Centre, University of Alberta, Edmonton, Alberta, Canada. Electronic address: krourke@ualberta.ca.
Abstract
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 stenting in 38.7%, angiographic embolization in 32.3%, nephrectomy in 22.6%, renorrhaphy in 3.2% and percutaneous drainage in 3.2%. On univariate analysis AAST-OIS, hematoma diameter, hematoma area, intravascular contrast extravasation, laceration length, laceration number, degree of devitalization and devitalized fragment presence were associated with the need for intervention (each p <0.001). On multivariate analysis only AAST-OIS grade (OR 69.4, 95% CI 6.4-748.3, p <0.001) and hematoma diameter (OR 1.5, 95% CI 1.1-1.9, p = 0.004) or area (OR 1.03, 95% CI 1.01-1.06, p = 0.012) remained associated with urological intervention. CONCLUSIONS: Although AAST-OIS is strongly associated with the need for urological intervention, perinephric hematoma size is also independently associated with this occurrence. Perinephric hematoma diameter should be considered during clinical decision making and incorporated into a revised injury grading system.
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 stenting in 38.7%, angiographic embolization in 32.3%, nephrectomy in 22.6%, renorrhaphy in 3.2% and percutaneous drainage in 3.2%. On univariate analysis AAST-OIS, hematoma diameter, hematoma area, intravascular contrast extravasation, laceration length, laceration number, degree of devitalization and devitalized fragment presence were associated with the need for intervention (each p <0.001). On multivariate analysis only AAST-OIS grade (OR 69.4, 95% CI 6.4-748.3, p <0.001) and hematoma diameter (OR 1.5, 95% CI 1.1-1.9, p = 0.004) or area (OR 1.03, 95% CI 1.01-1.06, p = 0.012) remained associated with urological intervention. CONCLUSIONS: Although AAST-OIS is strongly associated with the need for urological intervention, perinephric hematoma size is also independently associated with this occurrence. Perinephric hematoma diameter should be considered during clinical decision making and incorporated into a revised injury grading system.
Authors: Federico Coccolini; Ernest E Moore; Yoram Kluger; Walter Biffl; Ari Leppaniemi; Yosuke Matsumura; Fernando Kim; Andrew B Peitzman; Gustavo P Fraga; Massimo Sartelli; Luca Ansaloni; Goran Augustin; Andrew Kirkpatrick; Fikri Abu-Zidan; Imitiaz Wani; Dieter Weber; Emmanouil Pikoulis; Martha Larrea; Catherine Arvieux; Vassil Manchev; Viktor Reva; Raul Coimbra; Vladimir Khokha; Alain Chichom Mefire; Carlos Ordonez; Massimo Chiarugi; Fernando Machado; Boris Sakakushev; Junichi Matsumoto; Ron Maier; Isidoro di Carlo; Fausto Catena Journal: World J Emerg Surg Date: 2019-12-02 Impact factor: 5.469