A comparison of xylazine-ketamine and detomidine-ketamine anaesthesia in horses |
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Authors: | NS Matthews DVM SM Miller DVM MR Slater DVM PhD SM Hartsfield DVM MS CE Short DVM MS |
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Institution: | The Texas Veterinary Medical Center, Texas A&M University, College Station, TX;*New York State College of Veterinary Medicine, Cornell University, Ithaca, NY |
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Abstract: | Anaesthesia produced by xylazine (1.1 mg/kg IV) followed in 3–5 minutes by ketamine (2.2 mg/ kg IV) (X / K) was compared to anaesthesia produced by detomidine (0.02 mg/kg IV) followed in 15–25 minutes by ketamine (2.2 mg/kg IV) (D/K) in the same six horses. Quality of induction, recovery, muscle relaxation, coordination (before and after anaesthesia) and response to stimulus were subjectively evaluated. Heart rate, respiratory rate, mean blood pressure, hemoglobin saturation, arterial pH, CO2 and O2 were monitored. Recumbency time and number of attempts required to stand were recorded. Recumbency time was longer in all horses with X/K (median recumbency time of 27 min) than with D/K (median recumbency time of 22 min). No significant differences between treatments were seen for any other variable measured, although 2 horses did not appear to reach a surgical plane of anaesthesia with D/K. |
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