Wednesday, June 9, 2021

SBO grading

 Q: There are how many grades of Small Bowel Obstruction (SBO)? (select one)

A) Minimum, Moderate and Severe

B) 1, 11, and 111

C) 1, 11, 111, 1V, and V

Answer: C

The American Association for the Surgery of Trauma (AAST) has developed a grading system for SBO taking into consideration the radiological and operative criteria. It has been validated as reliable in subsequent studies. Higher grading predicts at least three things 

  • Higher hospital Length of Stay (LOS) 
  • Higher ICU LOS, and 
  • Higher complications.



1. Hernandez MC, Haddad NN, Cullinane DC, Yeh DD, Wydo S, Inaba K, Duane TM, Pakula A, Skinner R, Rodriguez CJ, Dunn J, Sams VG, Zielinski MD, Choudhry A, Turay D, Yune JM, Watras J, Widom KA, Cull J, Toschlog EA, Graybill JC; EAST SBO Workgroup. The American Association for the Surgery of Trauma Severity Grade is valid and generalizable in adhesive small bowel obstruction. J Trauma Acute Care Surg. 2018 Feb;84(2):372-378. doi: 10.1097/TA.0000000000001736. PMID: 29117026.

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