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  • Title: Increasing halothane concentration abolishes anesthesia-associated arrhythmias in cats and dogs.
    Author: Muir WW, Hubbell JA, Flaherty S.
    Journal: J Am Vet Med Assoc; 1988 Jun 15; 192(12):1730-5. PubMed ID: 3410790.
    Abstract:
    Fifteen cats and 6 dogs developed ventricular arrhythmias during halothane anesthesia. Halothane was administered by precision vaporizer, using a semiclosed anesthetic system. Cardiac arrhythmias were diagnosed within 5 to 10 minutes after a surgical plane of anesthesia was achieved. Arrhythmias in 9 of 15 cats and 3 of 6 dogs were converted to sinus rhythm by increasing the inspired halothane concentration. Conversion to sinus rhythm occurred within 4 minutes. Cardiac arrhythmias were reestablished in 8 of 9 cats and 2 of 3 dogs, after decreasing the inspired halothane concentration to its original value. Increasing the inspired halothane concentration can convert anesthetic-associated ventricular arrhythmias to sinus rhythm in dogs and cats.
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