Morphine-isoflurane interaction in dogs, swine and Rhesus monkeys
| Autor: | Eugene Steffey, M. J. Woliner, Masahiro Tagawa, K. A. Jarvis, J. D. Baggot, Ann R. Elliott, John H. Eisele, Neil H. Willits |
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| Rok vydání: | 1994 |
| Předmět: |
Swine
Spontaneous ventilation Partial Pressure Radioimmunoassay (+)-Naloxone pCO2 Dogs Species Specificity Pharmacokinetics medicine Animals Anesthesia Drug Interactions Pharmacology Control level Isoflurane Morphine General Veterinary business.industry Hemodynamics Carbon Dioxide Macaca mulatta Pulmonary Alveoli Injections Intravenous Swine Miniature Blood Gas Analysis business medicine.drug |
| Zdroj: | Journal of Veterinary Pharmacology and Therapeutics. 17:202-210 |
| ISSN: | 1365-2885 0140-7783 |
| Popis: | In monkeys, dogs and swine (six each) we tested the reduction of the isoflurane MAC (minimal alveolar concentration) produced by 2 mg.kg-1 morphine intravenously (i.v.) and the concurrent effect on PCO2 with spontaneous ventilation. MAC fell to a minimum of 55% of control at 53 min in monkeys, 50% at 38 min in dogs and 13% at 33 min in swine. PaCO2 rose at constant MAC with morphine to 55-60 mmHg, but did not fall over the next several hours despite the decline of plasma morphine concentration, and the resulting needed rise in isoflurane concentration to keep the anaesthesia depth at 1 MAC. After isoflurane concentration had returned to pre-morphine control levels, naloxone immediately reduced PaCO2 to or below control level. Morphine pharmacokinetics in the three species studied conformed to a two-compartment model. |
| Databáze: | OpenAIRE |
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