The American Association for the Surgery of Trauma (AAST) reported general categories to grade emergency surgery. Specific types of emergency surgery have been derived from it.
Parameters:
(1) local disease
(2) extension beyond the organ
Local Disease
Extension Beyond Organ
Grade
confined to organ with minimal abnormality
none
I
confined to organ with severe abnormality
none
II
NA
local
III
NA
regional
IV
NA
widespread
V
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