Assessment of the technique of the anesthetic block of the Brachial Plexus by Supraclavicular approach in Sapajus libidinosus (SPIX, 1823).

Abstract

The aim of study was to evaluate the efficacy of the supraclavicular brachial plexus block technique in Sapajus libidinosus. Were used eight animals, which were sedated, anesthetized, kept under hypnosis, and submitted to plexus block using a neurolocalizer. The physiological parameters, the nociception and response threshold (mA), were evaluated before and after the block. The response to electrical stimulation and cutaneous sensitivity were evaluated. The groups were compared by the Tukey or Friedman test at 5%. The technique promoted blockage of the plexus, and movement of the thoracic limb in response to electrical stimulation decreased after 10minutes. The applied milliampere increased after 5minutes. The cutaneous sensitivity reflex decreased. The average time of return of spontaneous limb movement exceeded 50minutes. The use of 5mg/kg of lidocaine 2% promoted loss of cutaneous sensitivity and limb muscle relaxation during the evaluation period.