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Year : 2004
Tome : 155
Volume : 4
Pages : 197-204
Title : Tiletamine-Zolazepam anesthesia in horses : repeated dose versus continuous infusion
Authors : M.A. LÔPEZ, J. JIMÉNEZ, M.F. MARTÌN, J.M. USÓN, E.M. PÉREZ and L.J. EZQUERRA
Summary : The aim of this study was to assess the efficacy of tiletamine-zolazepam anesthesia by continuous infusion in horses, and the influence of oxygen supplementation. Five horses were preanesthetized with detomidine and butorphanol and anesthetized using tiletamine-zolazepam both for induction and maintenance, according to three different regimes, with a 15-day minimum interval between Regimes: Regime I: 2 mg/kg for induction and 1 mg/Kg for maintenance, with no oxygen; Regime II: as Regime I, but administering oxygen at 8 liters/minute; Regime III: 1 mg/kg for induction and 2 mg/kg (0.033 mg/kg/min) via infusion, with 8 liters/minute oxygen. The following parameters were assessed: induction times, intubation quality, degree of analgesia, nystagmus, temperature, heart rate and respiratory rate, % oxygen saturation of arterial hemoglobin and recovery time and quality. Results indicated a good response to both induction doses. All maintenance parameters displayed greater stability in Regime III, although Regime I may represent a valid alternative where no oxygen source is available. Recovery, though relatively poor in all three Regimes, was better with continuous infusion and oxygen supplementation.
Keywords : Tiletamine-zolazepam - equids - continuous infusion - oxygen
Correspondence : L.J. EZQUERRA
Adress : Hospital Clínico Veterinario, Universidad de Extremadura, Av. de la Universidad S/N, 10071 Cáceres, Spain
Link : pdf

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