Comparison of respiratory and cardiovascular effects of halothane, isoflurane, and enflurane delivered via the Jackson-Rees breathing system in rats. New anaesthesia model for small animal surgery.
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引用次数: 0
Abstract
We studied the respiratory (R) and cardiovascular (CV) effects of 1.25 MAC halothane (H), isoflurane (I) and enflurane (E) in oxygen, delivered by the Jackson-Rees breathing system in 5 normothermic rats. Mean arterial pressure (MAP), heart rate (HR) were depressed after 30 minutes than stabilized after 2 hours anaesthesia regardless of the inhalational agent. Respiratory rate (RR) slowed down markedly unter I and E anaesthesia. Significant R depression was developed (PCO2 53.5 +/- 2.44 Torr) under E. Stabil metabolic condition was maintained. The R and CV changes caused by H and I were far less than changes produced by E. H or I is preferable to E for small animal anaesthesia with spontaneous breathing. Maintenance of constant temperature minimizes the CV and R disturbances.
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