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Table 1 Inclusion criteria

From: Intraoperative fluid optimization using stroke volume variation in high risk surgical patients: results of prospective randomized study

Procedure-related (at least one of them)
   Operation duration more than 120 minutes and opened peritoneal cavity
   Presumed blood loss more than 1,000 ml
Patient related (at least one of them)
   Ischemic heart disease or severe heart dysfunction
   Chronic obstructive pulmonary disease (moderate to severe)
   Age above 70 years
   ASA 3 or more for other reasons (chronic kidney disease, diabetes etc.)
Exclusion criteria
   Irregular heart rhythm
   Body weight less than 55 kg or more than 140 kg
   Age under 18 years
  1. ASA, American Society of Anesthesiologists' physical status classification.