Grade IIIa: requiring surgical intervention not under GA (secondary suturing under local anaesthesia)
Grade IIIb: requiring surgical intervention under GA (anastomotic leak requiring general anaesthesia for repair)
Grade IVa: single organ dysfunction requiring ICU
Grade IVb: multiorgan dysfunction
Suffix “d”: if the patient suffers from a complication at the time of discharge, the suffix “d” (for disability) is added to the respective grade of complication. This label indicates the need for a follow-up to fully evaluate the complication.