Efeitos analgésico, antiinflamatório e neuroendócrino da Arnica montana 12CH comparativamente ao cetoprofeno em cães

Abstract

The homeopathic medicament Arnica montana have been frequent used in the postoperative, result in reduce of the inflammatory process. This blind study aimed to evaluate the effects of Arnica montana 12CH and ketoprofen in acute pain postoperative of bitches submitted to ovariohisterectomy. Sixteen bitches were pre-medicated with acepromazine 0.2% (0.05mg/Kg IV) followed by anesthetic induction with propofol (5mg/kg IV) and maintained with isoflurane. The animals were randomly distributed in two groups: GC (n=8) treatment with ketoprofen (1mg/Kg PO, q 12h), 60 minutes before surgical incision; GA (n=8) treatment with Arnica montana 12CH (5 globules, q 8h) 60 minutes before surgical incision. Ketoprofen and Arnica montana treatments were administered for 24 hours after surgery. Heart and respiratory rates, systolic arterial pressure, rectal temperature, arterial blood gases, end tidal isoflurane concentration (ETiso), end tidal CO2 concentration (ETCO2), duration of surgery, time to endotracheal extubation, time to post-anesthetic recovery and cortisol serum concentration were assessed. Analgesia and edema degree were evaluated by score system Additional morphine (0.5 mg/kg IM) was given when the analgesia was insufficient. Statistical analyses were performed by Wilcoxon and Mann-Whitney tests. Degree of analgesia and edema did not differ between the groups. Rescue analgesia was administered to four dogs in the GA group (50%) and to five dogs (62.5%) in the GC group. It was concluded that similar analgesic, anti-inflammatory and neuroendocrine effects were provide by ketoprofen and Arnica montana treatment. However, rescue analgesia was required in the two groups, suggesting that both promote insufficient analgesia and they did not inhibit the stress response when administered isolated in bitches submitted to ovariohisterectomy.