American Association for the Surgery of Trauma (AAST) Grading Criteria for Diverticular Bleeding

American Association for the Surgery of Trauma (AAST) reported grading criteria for bleeding diverticuli.

Patient selection: colon diverticulosis

Parameters:

(1) evidence of bleeding

(2) active bleeding

Evidence of Bleeding	Active Bleeding	Grade
none	none	0
heme-positive stool	none	I
blood clot, no visible vessel	none	II
blood clot, visible vessel	none	III
NA	nonpulsatile hemorrhage or bleeding without identified source	IV
NA	active pulsatile hemorrhage	V

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