80
Participants
Start Date
June 30, 2015
Primary Completion Date
August 31, 2016
Study Completion Date
September 30, 2016
Morphine
0.5%Hyperbaric bupivacaine 2 ml add morphine 50 mcg for spinal anesthesia
Placebo
0.5%Hyperbaric bupivacaine 2 ml for spinal anesthesia
Mahidol University
OTHER