The American Association for the Surgery on Trauma (AAST) reported a severity grading system for emergency general surgery. This can be applied to arterial ischemic colitis. The authors are from multiple institutions in the United States.
Patient selection: ischemic colitis
Parameters:
(1) tissue loss
(2) perforation
Tissue Loss
Perforation
Grade
none
none
1
mucosal ulceration only
none
2
transmural infarction
none
3
transmural infarction
present
4
pan-intestinal infarction
NA
5
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