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Table 1 Demographic, surgical and intensive care inclusion criteria

From: Central venous-to-arterial carbon dioxide difference as a prognostic tool in high-risk surgical patients

High-risk criteria Values
Demographic criteria  
 Age ≥70 years 42 (37)
 ASA class ≥3 70 (61)
 Severe nutritional problems 11 (10)
 Previous severe respiratory illness 24 (11)
 Chronic renal failure 6 (5)
 Chronic liver failure 7 (6)
 Ischemic heart disease (infarction or angina) 51 (44)
 Malignant neoplasia 67 (58)
Surgical criteria  
 Major abdominal surgery 82 (71)
 Prolonged surgery ≥8 hours 9 (8)
 Urgent surgery 22 (19)
 Septic surgery 24 (21)
 Vascular clamping ≥1 hour 4 (4)
 Surgical procedures  
  Esophagectomy 22 (19)
  Gastrectomy 9 (8)
  Small bowel resection 17 (15)
  Large bowel resection 20 (17)
  Hepatectomy 21 (18)
  Pancreatectomy 16 (14)
  Intra-abdominal vascular surgery 24 (21)
  Other 2 (2)
Intensive care criteria  
 Shock 38 (33)
 Acute respiratory failure 32 (28)
 Hemorrhage (hemoglobin <7 g/dl) 10 (9)
 Acute coronary syndrome 7 (6)
  1. Data are presented as absolute value (%). Severe nutritional problems: body mass index ≤17 kg/m2 or weight loss >10% in 6 months. Chronic renal failure: creatinine clearance <60 ml/min per 1.73 m2 or creatinine >176 μmol/l. Chronic liver failure: bilirubin >78 μmol/l or prothrombin time <55% or well-documented cirrhosis.
  2. ASA, American Society of Anesthesiology physical status.