Insulin reverses bupivacaine-induced cardiac depression in dogs

Hyun S. Cho, Jeong J. Lee, Ik S. Chung, Byung S. Shin, Ji A. Kim, Kook Hyun Lee

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

We tested the hypothesis that an insulin infusion would effectively treat bupivacaine-induced cardiac depression in dogs. In 24 mongrel dogs anesthetized with pentobarbital (5 mg · kg-1 · h-1, IV), 0.5% bupivacaine was administrated at a rate of 0.5 mg · kg-1 · min-1 until the mixed venous oxygen saturation decreased to 60% or less. The bupivacaine infusion induced a decrease in mean arterial pressure, cardiac output, and heart rate. The dogs were randomly assigned to one of four groups after the end of bupivacaine infusion. The Control (C, n = 6) and Glucose (G, n = 6) groups received an IV infusion of normal saline (2 mL/kg) and glucose (2 mL/kg of 50% dextrose in water) for 15 min, respectively. The Insulin-Glucose (IG, n = 6) group received an IV bolus of regular insulin (1 U/kg), plus a glucose infusion (2 mL/kg of 50% dextrose in water) for 15 min. The Insulin-Glucose-Potassium (IGK, n = 6) group received the same dose of insulin and glucose as the IG group, plus potassium (1-3 mEq · kg-1 · h-1). Mean arterial pressure, cardiac output, heart rate, and mixed venous oxygen saturation recovered toward baseline level more rapidly in the IG and IGK groups than in the C group (within 5 min versus more than 20 min). These results suggest that the infusion of insulin and glucose might reverse bupivacaine-induced cardiac depression in dogs.

Original languageEnglish
Pages (from-to)1096-1102
Number of pages7
JournalAnesthesia and Analgesia
Volume91
Issue number5
DOIs
Publication statusPublished - Jan 1 2000

All Science Journal Classification (ASJC) codes

  • Anesthesiology and Pain Medicine

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