American Association for the Surgery of Trauma (AAST) Grading Criteria for an Abdominal Aortic Aneurysm

American Association for the Surgery of Trauma (AAST) reported grading criteria for a ruptured abdominal aortic aneurysm.

Patient selection: abdominal aortic aneurysm

Parameters:

(1) size of aneurysm

(2) rupture with bleeding

(3) other complications

Size of Aneurysm	Rupture with Bleeding	Other Complications	Grade
stable <= 4 cm	none	none	0
> 4 cm or increasing in size (> 5 mm in 6 months	none	none	I
NA	impending	none	II
NA	periaortic blood	none	III
NA	retroperitoneal hematoma	none	IV
NA	free intraperitoneal blood	NA	V
NA	NA	aortoenteric fistula, or aortocaval fistula	V

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