Hyperalgesia Clinical Trial
Official title:
Pain Response to Cannabidiol in Opioid-induced Hyperalgesia, Acute Nociceptive Pain and Allodynia By Using a Model Mimicking Acute Pain in Healthy Adults
Prospective, randomized, placebo-controlled, double-blinded, crossover study to investigate the effect of cannabidiol (CBD) on remifentanil-induced hyperalgesia in healthy volunteers in a well-established acute pain model. Participants are randomized according to the order of the two treatments (CBD + Remifentanil or Placebo + Remifentanil).
Opioid-induced hyperalgesia (OIH) is a clinically often neglected, but well described phenomenon. OIH could also be shown for Remifentanil in an acute pain model. As CBD showed antihyperalgesic potential in the animal model, this brings up the question if CBD might be used to prevent or diminish OIH. Until today there are no studies investigating CBD as an adjunct to remifentanil or other opioids regarding the OIH. This is however of great clinical value because CBD with its possible antihyperalgesic effect on the OIH might be a worthful adjunct for opioid based anaesthesia and analgesia. Every participant will pass through two interventions with electrically induced pain (Koppert model). CBD will be applied orally at the beginning of the intervention. Pain, allodynia and hyperalgesia will be assessed and recorded every 10 min during the remifentanil infusion and afterwards. ;
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