A Preliminary Comparison of Lidocaine and Xylazine as Epidural Analgesics in Ponies |
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| Authors: | L. W. FIKES DVM H. C. LIN DVM J. C. THURMON DVM MS DiplomateACVA |
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| Affiliation: | University of Illinois, College of Veterinary Medicine, Urbana 61801. |
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| Abstract: | Xylazine (0.35 mg/kg) or lidocaine (0.35 mg/kg) was injected into the epidural space of six ponies to compare their effectiveness as epidural analgesics. Each pony received both treatments at 1 week intervals with the order of treatments randomized. Xylazine produced analgesia of significantly longer duration (247 +/- 58 minutes) than that produced by an equal dose of lidocaine (135 +/- 22 minutes). Mild transient ataxia of no clinical significance developed in all ponies with both treatments. Spinal cords were removed from two ponies and examined histologically. No discernible pathologic changes were noted. |
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