2,000
Participants
Start Date
February 28, 2007
Primary Completion Date
December 31, 2007
Study Completion Date
December 31, 2007
Saline
Saline 5 ml administrated intravenously
Opioid
Butorphanol tartrate 1 mg i.v.
Opioid
Butorphanol Tartrate 2 mg i.v.
NSAID
Flurbiprofen Axetil 50 mg i.v.
NSAID
Flurbiprofen Axetil 100 mg i.v.
Opioid
Tramadol Hydrochloride 10 mg i.v.
Opioid
Tramadol Hydrochloride 20 mg i.v.
Nanjing Maternal and Child Care Hospital, Nanjing
Lead Sponsor
Nanjing Medical University
OTHER