EVALUATION OF THE INFILTRATION OF LIDOCAINE AND BUPIVACAINE IN THE REDUCTION OF 2 POST-SURGICAL PAIN IN CATS (Felis catus) UNDERGOING 3 OVARIOHYSTERECTOMY
local anesthetic; animal welfare; pain scale
The use of local anesthetics in specific sites was evaluated in felines, as effective pain controllers after ovariohysterectomy (OH) surgery to maintain animal well-being. The modified UNESP-Botucatu 8 scale was used to assess pain. Twentyone healthy felines (Felis catus), 9 ASA I classification, females, over 6 months of age, weighing more than 2kg, not pregnant, with a maximum intraoperative time for OH of 20 minutes, were used. All 11 received 0.3 mL of the solution at each site, namely: left and right ovarian 12 suspensory ligament, as well as the uterine body, immediately below the bifurcation. Thirteen were divided into three groups: 0.5% Bupivacaine Group without vasoconstrictor (GT1): 14 (trying not to exceed a dose of 1.5 mg/kg); 2% Lidocaine Group without vasoconstrictor 15 (GT2): (trying not to exceed a dose of 6 mg/kg); Control Group (GT3): infiltration of 16 0.3 mL of 0.9% NaCl solution. Pain assessment was carried out 2 (M2) and 24 (M24) hours after 17 surgeries. The modified UNESP-Botucatu scale proved to be effective for evaluating postoperative pain in cats undergoing ovariohysterectomy, resulting in lower scores for GT1 compared to GT3 in M2 and M24. The GT 2 did not show 20 differences compared to GT1 and GT3 at any time. The use of local anesthetic agents can 21 contribute to an efficient multimodal analgesic protocol, it was also revealed that the 22 treatment using bupivacaine was effective compared to the 0.9% NaCl control treatment, 23 and it could be adopted for use in ovariohysterectomy of felines.