[Utility of bicarbonated Ringer's solution as an intraoperative fluid during long-term laparotomy]
Masayasu Nakayama1, Masanori Yamauchi, Noriaki Kanaya
1Department of Anesthesiology, Sapporo Medical University School of Medicine, Sapporo 060-8543.
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.
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