68
Participants
Start Date
June 1, 2016
Primary Completion Date
October 8, 2016
Study Completion Date
January 20, 2017
Ropivacaine
ultrasound-guided thoracic paravertebral nerve block (TPVB) with 0.5% ropivacaine 20ml
Dexamethasone
ultrasound-guided thoracic paravertebral nerve block (TPVB) with 0.5% ropivacaine 20ml and dexamethasone 5 mg
saline
ultrasound-guided thoracic paravertebral nerve block (TPVB) with 0.9% saline 20ml
The first affiliated hospital of Anhui Medical University, Hefei
The First Affiliated Hospital of Anhui Medical University
OTHER