60
Participants
Start Date
May 31, 2015
Primary Completion Date
November 30, 2017
Study Completion Date
November 30, 2017
High dose remifentanil
Intervention: continuously intravenous infusion of remifentanil 0.1 mcg/kg/min after bolus injection of remifentanil 1.0 mcg/kg for 2 minutes
Low dose remifentanil
Intervention: continuously intravenous infusion of remifentanil 0.1 mcg/kg/min after bolus injection of remifentanil 0.5 mcg/kg for 2 minutes
No remifentanil
Intervention: no remifentanil will be administrated
Haeundae paik hospital, inje university, Busan
Inje University
OTHER