Efeitos de duas taxas de infusão de fentanil associados a lidocaína e cetamina no trans-operatório de cadelas anestesiadas com sevoflurano e submetidas à ovariossalpingohisterectomia

Abstract

The object of this research is to evaluate the cardiorespiratory parameters of two doses of fentanyl associated with lidocaine and ketamine in dogs undergoing ovariohysterectomy. 18 mongrel dogs were used , aged 2.7 ± 1.8 years and mean weight of 16.7 ± 7.7 kg . The animals were randomly divided into two groups and administered fentanyl bolus doses of 1,8 µg / kg (group A) and 3,6 µg / kg (group B) , associated with the 3 mg / kg of lidocaine and 0,6 mg / kg of ketamine. Anesthesia was induced with propofol, effective dose, and initiated a continuous infusion of fentanyl at 1,8 µg / kg / h for group A and 3,6 µg / kg / h for group B associated 3mg / kg / h of lidocaine and 0.6 mg / kg / h of ketamine . The following variables (heart rate, respiratory rate, oxyhemoglobin saturation , end tidal concentration of carbon dioxide, average arterial pressure and temperature) were evaluated every 15 minutes from the trans - anesthetic period. Parametric data were statistically analyzed using one-way ANOVA followed by Tukey (p < 0.05). Both rates of fentanyl, lidocaine and ketamine combined, provide cardiorespiratory stability intratoperative ovariohysterectomy.