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Grade IV renal trauma management. A revision of the AAST renal injury grading scale is mandatory

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Abstract

Introduction

The AAST renal injury grading scale is currently the most important variable predicting the need for kidney repair or removal, morbidity and mortality after blunt or penetrating kidney injuries. The 2011 revised version included renal pelvis, uretero-pelvic junction and segmental vascular injuries as grade IV, limiting grade V to severe hilar injuries. However, patients requiring surgery cannot be properly identified because of hemodynamic instability due to grade IV renal injuries. This study proposes an add-on for the AAST grade IV renal injury scale to improve the management of these patients.

Method

We searched the Medline and Scopus databases up to September 2014. Searches were not restricted by date, language or publication status. Pediatric studies were excluded.

Results

71 articles were found, 57 were pertinent, including 6 directly related to the topic. 3 risk factors were identified to be associated with surgery for hemodynamic instability: perirenal hematoma >3.5 cm, intravascular contrast extravasation and medial renal laceration. Presence of two or more of these criteria has been validated in two other studies to predict the need for intervention. Patients with >25 % devascularized fragments also have poor prognosis and should be treated more aggressively.

Conclusion

These elements should be included in future classification reassessment to efficiently determine the time for surgery in grade IV renal traumas, generally leading to nephrectomy.

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Conflict of interest

P. Chiron, E. Hornez, G. Boddaert, M. Dusaud, Y. Bayoud, B. Molimard, F.R. Desfemmes, X. Durand declare that they have no conflict of interest.

Compliance with ethical requirements

P. Chiron, E. Hornez, G. Boddaert, M. Dusaud, Y. Bayoud, B. Molimard, F.R. Desfemmes, X. Durand declare that this article is consistent with ethical requirements.

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Authors and Affiliations

  1. Department of Urology, Val de Grace Military Hospital, 74 boulevard de Port Royal, 75005, Paris, France

    P. Chiron, M. Dusaud, Y. Bayoud, B. Molimard, F. R. Desfemmes & X. Durand

  2. Department of Thoracic and General Surgery, Percy Military Hospital, 101, avenue Henri Barbusse, 92140, Clamart, France

    E. Hornez & G. Boddaert

  3. 6th Airportable Surgical Unit, French Army Health Service, Paris, France

    E. Hornez

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  1. P. Chiron
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Correspondence to P. Chiron.

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Chiron, P., Hornez, E., Boddaert, G. et al. Grade IV renal trauma management. A revision of the AAST renal injury grading scale is mandatory. Eur J Trauma Emerg Surg 42, 237–241 (2016). https://doi.org/10.1007/s00068-015-0537-5

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  • DOI: https://doi.org/10.1007/s00068-015-0537-5

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