Intra-Abdominal Hypertension and Abdominal Compartment Syndrome in Association with Ruptured Abdominal Aortic Aneurysm in the Endovascular Era: Vigilance Remains Critical

Table 4

Proposed classification of the open abdomen. Adapted from Björck et al. [35].

Grade	Description
1A	Clean OA without adherence between bowel and
	abdominal wall or fixity (lateralization of the
	abdominal wall)
1B	Contaminated OA without adherence/fixity
2A	Clean OA developing adherence/fixity
2B	Contaminated OA developing adherence/fixity
3	OA complicated by fistula formation
4	Frozen OA with adherent/fixed bowel; unable to
	close surgically; with or without fistula