Resumo

BAEZ, Paola C; RUIZ, Isabel; RESTREPO, Luis F  e  RUIZ, Jhon D. Comparision of two anesthetic protocols for ovariohisterectomy in healthy female dogs. Rev Colom Cienc Pecua [online]. 2007, vol.20, n.4, pp.425-430. ISSN 0120-0690.

To determine the hemodynamic and physiologic changes and the characteristics of the recuperation phase in two anesthetic protocols to be used in healthy female dogs for elective ovariohisterectomy, two groups of animals were used in order to test two protocols: Group I was given fentanyl + ethomidato and group II fentanyl + thiopental. For maintenance isofluorane was used in both groups. The following variables were measured at five minute intervals during the surgical procedure: cardiac frequency, breathing frequency, temperature, expired carbon dioxide, non- invasive blood pressure and oxygen saturation. Statistically, temperature and capnography were the only ones yielding significant results: temperature presented an average of 37.7 ± 1.4, in protocol I and 38.0 ± 1.2 in protocol II (p<0.05); for capnography the average was of 50.9 ± 19.1 for protocol I and 51.9 ± 7.9 for protocol II (p<0.01), the other variables did not present statistical differences between the tested protocols and maintained themselves within physiological parameters. For recuperation the fallowing variables were measured: time to gag reflex, esternal position, time of liquid ingestion and time of ingestion of solids. In summary, in spite of the significant differences in temperature and capnography, the values were always within physiological parameters therefore in practical terms the protocols behaved in a similar manner. It corresponds to the clinician to define which of the two protocols is more suitable depending of variables and circumstances other than those analyzed in this study such as costs and availability.

Palavras-chave : anesthetic induction and premedication; canine anesthesia; canine sterilization; hemodynamics; physiological constants.

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