Ileosigmoid knotting causing gangrenous bowel obstruction in a postpartal mother presented with septic shock: A case report and review of literature

Table 3 Atamanalp et al[20] classification (2009)

Class	Clinical criteria
Class 1	No risk factor
Class 2	No shock or gangrene but presence of other risk factors (e.g., age > 60 years or associated disease)
Class 3	Presence of shock
Class 4	Single-segment bowel gangrene (ileum or sigmoid colon)
Class 5	Shock and single-segment bowel gangrene
Class 6	Gangrene in both segments