Study Status: Not yet recruiting
Recruit Status: Not yet recruiting
Study Type: Interventional
Official Title: Effects and Mechanism of Pretreatment With Dexmedetomidine to Etomidate Induce Myoclonus During General Anesthesia Induction Period
Brief Summary: By observing the difference of plasma homovanillic acid concentrations and brain electrical consciousness monitoring Narcotrend index, study the possible mechanism of influencing Etomidate induced myoclonus with Dexmedetomidine pretreatment during general anesthesia induction period.