40
Participants
Start Date
December 31, 2014
Primary Completion Date
November 30, 2015
Study Completion Date
November 30, 2015
Local Infiltration
Injection at perianal region with ropivacaine 0.75%(20ml)
Subarachnoidal block
Injection at subarachnoidal space with bupivacaine 0.5% ( 2ml)
Federal University of São Paulo
OTHER