title: [Utility of bicarbonated Ringer's solution as an intraoperative fluid during long-term laparotomy].
abstract: BACKGROUND
  We compared the effects on intraoperative acid-base balance of bicarbonated Ringer (BR) and those of acetated Ringer (AR) solutions as an intraoperative fluid during long-term laparotomy.
  
  
  METHODS
  Forty patients scheduled for laparotomy expected to take more than 5 hours were divided into two groups according to the type of infused solution, BR or AR. Each solution was intravenously administered at a rate between 8 and 10 ml x kg(-1) x hr(-1). Arterial blood gases were analyzed before and during surgery.
  
  
  RESULTS
  Intraoperative arterial blood HCO3- and base excess (BE) significantly decreased in the AR group but not in the BR group. HCO3- and BE 2 and 4 hrs after the start of surgery and at the end of surgery were significantly higher in the BR group than in the AR group.
  
  
  CONCLUSIONS
  These results suggest that BR has superior effects on the acid-base balance during long-term laparotomy.
authors.affiliation: Department of Anesthesiology, Sapporo Medical University School of Medicine, Sapporo 060-8543.
authors.forename: Masayasu
authors.initials: M
authors.lastname: Nakayama
authors.forename: Masanori
authors.initials: M
authors.lastname: Yamauchi
authors.forename: Noriaki
authors.initials: N
authors.lastname: Kanaya
authors.forename: Akiyoshi
authors.initials: A
authors.lastname: Namiki
mesh_terms: D000136:Acid-Base Equilibrium / Q000502:physiology*; D000328:Adult; D000368:Aged; D001639:Bicarbonates; D005260:Female; D005440:Fluid Therapy / Q000379:methods; D006801:Humans; D007430:Intraoperative Care; D007552:Isotonic Solutions / Q000627:therapeutic use*; D007813:Laparotomy; D008297:Male; D008875:Middle Aged; D000077331:Ringer's Solution
chemical_list: D001639:Bicarbonates; D007552:Isotonic Solutions; D000077331:Ringer's Solution