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Table 3 Classification of adhesions according to Zühlke et al.

From: Bologna guidelines for diagnosis and management of adhesive small bowel obstruction (ASBO): 2017 update of the evidence-based guidelines from the world society of emergency surgery ASBO working group

Grade 0 No adhesions or insignificant adhesions
Grade 1 Adhesions that are filmy and easy to separate by blunt dissection
Grade 2 Adhesions where blunt dissection is possible but some sharp dissection necessary, beginning vascularization
Grade 3 Lysis of adhesions possible by sharp dissection only, clear vascularization
Grade 4 Lysis of adhesions possible by sharp dissection only, organs strongly attached with severe adhesions, damage of organs hardly preventable