105
Participants
Start Date
January 31, 2016
Primary Completion Date
September 30, 2016
Study Completion Date
September 30, 2016
0.25% ropivacaine hydrochloride
stellate-ganglion block with 0.25% ropivacaine hydrochloride
saline
stellate-ganglion block with saline
the First Hospital of China Medical University, Shenyang
China Medical University, China
OTHER