Table 1. Classification of the open abdomen.

Adapted from Björck et al. [7]

Grade	Description
1A	Clean open abdomen without adherence between the bowel and abdominal wall or fixity
1B	Contaminated open abdomen without adherence between the bowel and abdominal wall or fixity
1C	Enteric leak without fixation
2A	Clean open abdomen developing adherence between the bowel and fixity
2B	Contaminated open abdomen developing adherence between the bowel and fixity
2C	Enteric leak developing fixation
3A	Clean, frozen abdomen
3B	Contaminated, frozen abdomen
4	Established enteroatmospheric fistula, frozen abdomen