Overview The Effects of Dexmedetomidine and Tracheal Intubation on Heart Rate Variability and QTc Interval Status: Completed Trial end date: 2013-12-23 Target enrollment: Participant gender: Summary The purpose of this study is to investigate effect of dexmedetomidine and tracheal intubation on heart rate variability and QTc interval. Phase: N/A Details Lead Sponsor: Yonsei UniversityTreatments: Dexmedetomidine