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  • Title: Potency of enflurane in dogs: comparison with halothane and isoflurane.
    Author: Steffey EP, Howland D.
    Journal: Am J Vet Res; 1978 Apr; 39(4):573-7. PubMed ID: 646193.
    Abstract:
    Circulatory and respiratory responses to graded increases in alveolar concentrations of enflurane were investigated in unpremedicated healthy dogs during conditions of spontaneous and controlled ventilation. The minimal alveolar concentration (MAC) of enflurane that prevented movement in response to a standard painful stimulus was determined for each dog and averaged 2.06 vol%. In these studies, enflurane produced cardiopulmonary depression in proportion to the alveolar dose. The average end-tidal enflurane concentration that produced at least 60 s of apnea was 5.29 vol% (ie, MAC 2.57). A comparison of these data with previous studies in dogs indicates that equipotent concentrations of enflurane are at least as depressant to the cardiopulmonary system as halothane and isoflurane.
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