Parâmetros fisiológicos de cadelas anestesiadas com propofol e com infusão contínua de morfina ou fentanil, associados com lidocaína e cetamina, submetidas à ovariosalpingohisterectomia

Abstract

The objective of this study was to evaluate changes in the parameters of heart rate (HR), respiratory rate (RR), temperature (T), systolic blood pressure (SBP), diastolic blood pressure (DBP) and mean (MBP) of bitches submitted to elective ovariosalpingohysterectomy and anesthetized with propofol and continuous infusion of morphine or fentanyl, associated with ketamine and lidocaine. Were selected 20 bitches, adult, healthy, aged between 3-6 years and a mean weight of 12.4 kg, were obtained from the Protective Association of the animals of Feira de Santana. The bitches were separated into two groups of 10 animals each, called Group MLK (GMLK) and Group FLK (GFLK. As MPA, the GMLK received by the IM 0.03mg/kg acepromazine and 0.5mg/kg of morphine, while the GFLK received the same dose of acepromazine and 5g/kg of fentanyl. The females of the two groups were induced to general anesthesia with 5mg/kg of IV propofol and maintained in anesthetic plane by continuous infusion of the same anesthetic agent with a rate of 0.2 mg/kg/min. Soon after induction, it was administered by IV bolus with 1mg/kg ketamine and 1.5 mg/kg of lidocaine in both groups. During the surgery, the GMLK received by continuous infusion at the rate of 10ML/kg/hour, 10mg of morphine, 150mg of lidocaine and 30 mg ketamine in 500 ml of 0.9% saline solution, while the GFLK received 0.1mg of fentanyl, 150mg of lidocaine and 30 mg of ketamine also diluted in 500ml of 0.9% saline solution and at the same rate of infusion. The following variables were assessed before the MPA (M0), 10 minutes after the MPA, before induction and application of the bolus (M1) and the beginning of the surgery (M2), incision of the skin, subcutaneous tissue and line Alba (M3), rollout, clamping and section of the ovaries right (M4) and left (M5), and clamping section of uterine stump (M6) and the end of surgery (M7). With the comments of the analyzes of the parameters, it is concluded that the anesthetic protocols used, produced satisfactory analgesic effects, in addition to promoting stability cardiovascular and respiratory being the protocol FLK the best option for having promoted the best medium in comparison with the protocol MLK.