Eficácia analgésica da Nova Craniopuntura de Yamamoto em cadelas submetidas à mastectomia unilateral e ovário-salpingo-histerectomia

Abstract

The aim of this study was investigated the analgesic efficacy of Yamamoto New Scalp Acupuncture for dogs undergoing unilateral mastectomy with ovariohysterectomy. Twenty-four dogs were randomly distributed into two treatments (n = 12, per group): GYNSA, bilateral basic B, C and D points were stimulated from 20 minutes prior to anesthetic induction to the end of the surgery; GC, no acupuncture was applied. All dogs were sedated with intramuscular (IM) morphine (0.3mg/kg), followed by an intravenous (IV) constant rate infusion (0.1mg/kg/h) which was maintained throughout the surgery. Anesthesia was induced with IV propofol dose effect and maintained with isoflurane. Meloxicam (0.2 mg/kg IV) was administered after intubation. Intraoperatively, fentanyl (2.5 µg/kg) was given to control cardiovascular responses to surgical stimulation. Postoperative pain was assessed using an Interactive Visual Analog Scale (IVAS), the short-form of the Glasgow Composite Pain Scale (CMPS-SF), and sedation scores by a score system. Morphine (0.5 mg/kg IM) was administered as rescue analgesia if CMPS-SF ≥ 6/24. Intraoperatively, the number of dogs requiring supplemental analgesic and the number of doses of fentanyl were lower in the GNCY (p = 0.027-0.034). Significantly lower IVAS pain scores were recorded at 0.5 and 1 hours in the GYNSA (p = 0.021; p = 0.023). Postoperative rescue analgesia did not differ between groups. As part of a multimodal pain therapy, the YNSA technique decreased the intraoperative analgesic requirements, with minimal evidence of an additional postoperative analgesic benefit.