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Table 1 Classification of Surgical complications

From: Efficacy of interleukin-6 in combination with D-dimer in predicting early poor postoperative prognosis after acute stanford type a aortic dissection

Grade Defifinition
Grade I Any deviation from the normal postoperative course without the need for pharmacological treatment or surgical, endoscopic, and radiological interventions
Allowed therapeutic regimens are: drugs as antiemetics, antipyretics, analgetics, diuretics, electrolytes, and physiotherapy. This grade also includes wound infections opened at the bedside
Grade II Requiring pharmacological treatment with drugs other than such allowed for grade I complications
Blood transfusions and total parenteral nutrition are also included
Grade III Requiring surgical, endoscopic or radiological intervention
 Grade IIIa Intervention not under general anesthesia
 Grade IIIb Intervention under general anesthesia
Grade IV Life-threatening complication (including CNS complications)a requiring IC/ICU management
 Grade IVa Single organ dysfunction (including dialysis)
 Grade IVb Multiorgan dysfunction
Grade V Death of a patient
  1. CNS central nervous system, IC intermediate care, ICU intensive care unit
  2. aBrain hemorrhage, ischemic stroke, subarrachnoidal bleeding, but excluding transient ischemic attacks