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Table 2 Complication grades according to the Dindo-DeOliveira classification scheme a

From: DRAPA trial – closed-suction drains versus closed gravity drains in pancreatic surgery: study protocol for a randomized controlled trial

Grade Definition
Grade I Any deviation from the normal postoperative course without the need for pharmacological treatment or surgical, endoscopic and radiologic intervention
Grade II Requiring pharmacological treatment with drugs other than those allowed for grade I complications
Grade III Requiring surgical, endoscopic or radiological intervention
Grade IIIa Intervention not under general anaesthesia
Grade IIIb Intervention under general anaesthesia
Grade IV Life-threatening complications requiring intensive care unit management
Grade IVa Single-organ dysfunction
Grade IVb Multiorgan dysfunction
Grade V Death of patient
  1. aThe Dindo-DeOliveira classification system is reported in detail elsewhere [42,43].