168
Participants
Start Date
July 31, 2014
Primary Completion Date
March 31, 2015
Study Completion Date
March 31, 2015
Placebo
Normal saline 10 ml
Ondansetron
Ondasetron 8 mg IV after spinal anesthesia
Ephedrine
Ephedrine 10 mg IV after spinal anesthesia
Siriraj Hospital, Mahidol University, Bangkok
Mahidol University
OTHER