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Archivos de medicina veterinaria

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THIBAUT, J.; RIVERA, T.  and  AHUMADA, F.. Intravenous anaesthesia in dogs using a single dose of propofol premedicated with atropine _ acepromazine or atropine _ xylazine. Arch. med. vet. [online]. 2002, vol.34, n.1, pp.25-35. ISSN 0301-732X.

Twenty mongrel dogs, both sexes, of 1 to 6 years were divided into two groups of ten animals each. A dose of 1.5 mg/kg of acepromazine was administered to the first group (A.A.P) of 16.2±1,63 kg body weight. The second group (X.A.P) of 11.9±1.7.1 kg. body weight, received a 3 mg/kg i.m. dose of xylazine. Both groups received atropine 0.1 mg/kg s.c. ten minutes before the administration of propofol 5 mg/kg i.v. The effects of Propofol on latency period, surgical anesthesia duration, recovery period, respiratory rate, heart rate, arterial blood pressure, and body temperature were evaluated. Adverse reactions to propofol were registered. The results of the anesthesiological variable significantly differed between the two groups: induction of anesthesia was 0.45 + 0.03 min in the first and 0.26 + 0.03 in the second group. Surgical anesthesia period was 12.3 + 1.89 min in the first and 25.2 + 1.78 min in the second group, and recovery period was 4.5 + 0.63 min and 10.1 + 0.98 min in group 1 and 2, respectively. The physiological variables in both groups were maintained without significant modification during the surgical anesthesia period; respiratory rate had an initial average of 14.3 + 2.45 and 13.0 + 1.54 breaths/min in group 1 and 2 respectively. The heart rate was 175 + 11.81 beats/min in the first and 148.,4 + 9.04 beats/min in the second group; the average arterial blood pressure was 102.6 + 5.69 and 111.8 + 10.43 mm Hg for the first and second group, respectively. Body temperature in the first group was 38.5 + 0.17 and 38.7 + 0.2 ºC for the second group. Adverse reactions were muscle twitching (3 cases) and opisthotonus (1 case) in group 1; transitory apnea (2 cases) in group 2, during the initial anesthesia period. It may be concluded that a single dose of propofol premedicated either with atropine-acepromazine or atropine-xylazine combination induces an adequate surgical anesthesia in dogs, without significant changes on physiological parameters

Keywords : Anestesia; Propofol; perros; Anaesthesia,; Propofol; dogs.

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