60
Participants
Start Date
November 12, 2016
Primary Completion Date
March 30, 2017
Study Completion Date
May 25, 2017
ropivacaine
40 ml 0.375% ropivacaine was injected after Locating brachial plexus.
ropivacaine mixed with dexmedetomidine
40 ml 0.375% ropivacaine mixed with dexmedetomidine was injected after Locating brachial plexus.
The First Hospital of Qinhuangdao
OTHER_GOV