A randomized comparison
This study was conducted between June 2009 and
March 2010. One hundred eighty pregnant women
participated in this study. The women were scheduled
for elective cesarean delivery in the Obstetric
Wards, Department of Obstetrics and Gynecology,
Charoenkrung Pracharuk Hospital. This study was
approved by the Ethics Committee of Medical Service
Department, Bangkok Metropolitan Administration.
The patients counseled regarding the possible risks
and benefits of this research protocol, and signed an
informed consent document.