%0 Journal Article %T Supraclavicular Brachial Plexus Block: Comparison of Varying Doses of Butorphanol Combined with Levobupivacaine ¨C A Double-Blind Prospective Randomized Trial %A B. Bharathi %A B. Lakshmi Praveena %A K. Neela Krishnaveni %J Archive of "Anesthesia, Essays and Researches". %D 2019 %R 10.4103/aer.AER_190_18 %X The ideal dose of butorphanol for brachial plexus block is not well known %K Anesthesia %K brachial plexus block %K bupivacaine %K butorphanol %K local %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6444942/