Effect of marbofloxacin on cardiovascular variables in healthy isoflurane-anesthetized dogs

GPA Chanoit, M Schneider, F Woehrlé, HP Lefebvre

    Research output: Contribution to journalArticle (Academic Journal)peer-review

    6 Citations (Scopus)

    Abstract

    Objective—To study the hemodynamic effects of marbofloxacin (MBF) in isoflurane-anesthetized dogs. Animals—6 healthy 8-month-old Beagles. Procedure—Anesthesia was induced with sodium thiopental and maintained with isoflurane. Cardiovascular variables were monitored throughout anesthesia. Marbofloxacin was administered by an IV bolus at 2 mg/kg, followed 10 minutes later by an infusion at a rate of 40 mg/kg/h for 30 minutes (total dose, 20 mg/kg). Plasma MBF concentrations were measured by high-performance liquid chromatography. Results—The mean peak concentration during MBF infusion was 34.2 ± 6.4 µg/mL. The IV administration of the MBF bolus did not alter any cardiovascular variable in isoflurane-anesthetized dogs. Significant changes were found during infusion when a cumulative dose of 12 mg/kg had been given. The maximal decreases observed at the end of the infusion were 16% in heart rate, 26% in systolic left ventricular pressure, 33% in systolic aortic pressure, 38% in diastolic aortic pressure, 29% in cardiac output, and 12% in QT interval. All dogs recovered rapidly from anesthesia at the end of the experiment. Conclusions and Clinical Relevance—MBF may safely be used at 2 mg/kg IV in isoflurane-anesthetized dogs, and significant adverse cardiovascular effects are found only when 6 to 8 times the recommended dose is given.
    Translated title of the contributionEffect of marbofloxacin on cardiovascular variables in healthy isoflurane-anesthetized dogs
    Original languageEnglish
    Pages (from-to)2090 - 2094
    Number of pages5
    JournalAmerican Journal of Veterinary Research
    Volume66
    DOIs
    Publication statusPublished - Dec 2005

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