Use of Bupivacaine for intratesticular blockage and incision site infiltration in dogs undergoing routine castration

Abstract

Effective analgesia is a crucial component of routine surgeries focused on fertility control and dog populations and the use of local anaesthetics improves anaesthetic safety by decreasing inhalant dosages with the reduction in the dosedependent cardiorespiratory effects of the inhalants. The aim of this study is to determine the effectivity of infiltrated bupivacaine in the incision site in order to improve pain management and reduce discomfort of the patient. All the animal of this study were assigned in two groups in a randomly and blindly manner participating the same surgeon and the same evaluator in each procedure. Group 1 was formed by 10 animals have infiltrated bupivacaine in the incision site; group 2 was formed by 10 animals have saline solution in the incision site, but both groups have bupivacaine intratesticular. All dogs in the study are male dogs that have undergone a physical examination prior to a routine close orchiectomy in the Insular Gran Canaria Shelter. After surgery, all the animal were under the Glasgow scale for pain assessment and to a photo follow-up 24 and 48h after the surgery. The physiological variables, which are temperature, respiratory rate, heart rate and pain level, were analysed using a linear mixed study. Stadistical data have been analysed using the Student’s t-test /Welch test or the Wilcoxon test. All the animals recovered successfully from surgery and no big complications were observed. The results of the study conclude that the use of bupivacaine infiltrated into the incision site has a positive effect on the awakening and evolution of the wound condition