Surgery Clinical Trial
Official title:
Analgesic Efficacy of Intravenous Dexmedetomidine for Supraclavicular Plexus Block: a Randomized Double-blinded Placebo Controlled Clinical Trial
The goal of the study is to compare the duration of analgesia in patients undergoing forearm or hand surgery with a supraclavicular brachial plexus block, who receive either iv dexmedetomidine or placebo.
Most surgical interventions on the forearm and the hand in Valais Hospital are performed under regional anesthesia. This ensures intraoperative patient comfort and reduces pain during the first 6 to 12 postoperative hours. A very common strategy to provide anesthesia of the arm is to inject local anesthetics in the region over the clavicle around the brachial plexus. This "supraclavicular brachial plexus block" is routinely performed in Valais Hospital and is always done under ultrasound guidance. A drawback of locoregional anesthesia is the recurrence of pain once the effect of the block wears off after approximately 6 to 8 hours. This phenomenon is called rebound pain. It and can be very severe and debilitating, can significantly impact postoperative recovery and may also preclude ambulatory surgery as well as early mobilization and physiotherapy. Therefore, strategies that prolong the analgesic effect of locoregional anesthesia are warranted. Dexmedetomidine is a selective α2-adrenoceptor agonists with sedative and analgesic properties. It has been shown to prolong the analgesic duration of local anesthetics when administered intravenously. However, the association of dexmedetomidine with long-acting local anesthetics for supraclavicular brachial plexus block has not been systematically investigated. ;
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