Analgesic effects of ketorolac/lidocaine compared to dexmedetomidine/lidocaine in intravenous regional anesthesia

Intravenous regional anesthesia has been known as a safe and reliable technique for creating anesthesia and lack of bleeding during extremities surgery. some of the disadvantages of this method are lack of continuity of anesthesia, beginning of the slow effect of the medicine, less muscle relaxation, pain caused by tourniquet, and also lack of pain after surgery. to increase the quality of the nerve block, elongation of analgesia after tourniquet deflation and also reduction of pain caused by tourniquet, numerous medicines which affect peripheral nerves can be used such along with local anesthetic medicines . Among these medicines, ketorolac, due to ease of prescription and beginning of quick effect, is a proper option, Also numerous studies have shown the positive effects of dexmedetomidine on the reduction of pain caused by tourniquet and after deflation of it in intravenous regional anesthesia. However, no study has compared the effects of these two medicines , the purpose of this study is to compare dexmedetomidine and ketorolac along with lidocaine in intravenous regional anesthesia.