Recuperação clínica e escore nociceptivo de bezerros submetidos a intubação retrógrada

Abstract

Adult cattle have a developed rumen that does not empty completely, even after 24 to 48 hours of water and food fasting. If the airways are not properly protected, in a conventional orotracheal intubation process, a quantity of rumen contents can be aspirated and trigger aspiration pneumonia. Retrograde intubation is described in humans, in this way, the study aimed to evaluate the postoperative period of the retrograde intubation technique in calves. Was used nine healthy male calves, 2 – 6 months old, 50 – 160 kg, pre-medicated with acepromazine 0,03 mg/kg, IV and meperidine 2 mg/kg, IM, after 30 minutes, induced with midazolam 0,1 and ketamine 1 (mg/kg) followed by propofol 5 mg/kg, IV, for two minutes and maintained at 0,4 mg/kg/min, IV. After the technique, the animals received tramadol 2mg/kg IM every 12 hours for two days and flunixin meglumine 2,2 mg/kg IV, SID for three days. Was evalueted in the moments Basal, H1, H2, H4, H6, H8, H12, D1, D2, D3, D4, D5, D6 and D7 the heart and respiratory rate, rectal temperature, ruminal movements, wound temperature and nociception of the incised local, with validated scales for assessing pain in cattle. Based on the results obtained in the present study, it is possible to conclude that the retrograde intubation technique with the pharmacological protocol used did not significantly alter the physiological parameters and clinical recovery of the calves, consequently, it did not present significant changes in the health of the animals.