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Published on: February 2, 2021
Implementation and Interim Analysis of a Standardized Renal Trauma Imaging and Urinary Extravasation Management
Leah Chisholm1, George E Koch1, Jennifer J Huang2
1Department of Urology, Vanderbilt University Medical Center, Nashville, Tennessee.
Implementing a new renal trauma imaging protocol improved adherence to guidelines for delayed-phase imaging (DPI) in renal injuries. This led to eliminating immediate interventions for urinary extravasation (UE) without increasing readmissions.
Area of Science:
- Urology
- Radiology
- Trauma Surgery
Background:
- The American Urological Association (AUA) recommends delayed-phase imaging (DPI) for evaluating collecting system injuries in renal trauma.
- A protocol was implemented to enhance adherence to early conservative management of urinary extravasation (UE).
Purpose of the Study:
- To assess the impact of a new renal trauma imaging protocol on guideline adherence and patient outcomes.
- To determine if improved adherence to DPI and early conservative management affects intervention rates and readmissions for UE.
Main Methods:
- Retrospective review of patients with American Association for the Surgery of Trauma (AAST) grade III-V renal injuries from January 2018 to September 2022.
- Comparison of DPI frequency and patient outcomes before and after the implementation of a multidisciplinary renal trauma imaging protocol.
Main Results:
- Adherence to DPI on admission significantly increased from 32.8% to 58.7% post-protocol (P < .001).
- Rate of follow-up imaging increased from 18.3% to 58.7% (P < .001).
- Immediate interventions for UE decreased to 0% post-protocol, with no significant changes in delayed interventions or readmissions.
Conclusions:
- The implemented protocol successfully improved adherence to AUA guidelines for renal trauma imaging and management.
- Protocol adherence eliminated immediate interventions for UE without compromising patient outcomes regarding readmissions.
- Further research is warranted to define the role of routine follow-up imaging in the conservative management of high-grade renal trauma.
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Imaging Studies III: Computed Tomography
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Acute Kidney Injury IV: Diagnostic Studies and Prevention

