Avaliação dos efeitos analgésicos e sedativos da meperidina por via epidural em bovinos submetidos à laparotomia pelo flanco

Abstract

We evaluated the effectiveness of analgesic and sedative effect of epidural meperidine in cattle undergoing laparotomy flank. SRD 10 cattle of both sexes and of different ages, who underwent exploratory laparotomy flank were used. The animals were divided into two groups, with five animals in each randomly: control (GC) group, which received 20 mL of 0.9% saline solution, and the meperidine group (GM), which received 20 mL of solution containing 0.5 mg / kg meperidine between the epidural space Co1, Co2, after paravertebral anesthesia has been performed. The solution was injected at a rate of 1.0 ml / 6 seconds. For this we used a 20 mL syringe and a hypodermic needle 40 x 12. The animalswere paravertebral local anesthesia held in the spaces T13 - L1, L1 - L2 and L2 - L3 with 2% lidocaine and maintained in log restraint in the standing position during the surgical procedure. The following parameters were evaluated: heart rate, respiratory rate and rectal temperature of the patient at regular 10 minute intervals for three hours. After completion of the surgical procedure until they are three hours of application of the behavioral drug were evaluated at intervals of ten minutes. From the three-hour application of the drug until they are six hours of application, the evaluations were performed every thirty minutes after new assessments were conducted with 0:24 hours after drug administration. There was no statistically significant difference for any variable behavior except DEF (sternal recumbency with limbs flexed) and LOOK FER. (animal often looks at the wound) where (p> 0.05). Physiological parameters such as heart rates, respiration and rectal temperature differed between the groups, but not between moments. The results indicate that the admistration of epidural meperidine promoted a good analgesia for surgeries by flank in cattle.