Evaluation of Efficacy and Safety of General Anesthesia Using Dexmedetomidine With Sevoflurane in Patients Undergoing Arthroscopic Shoulder Surgery: Preliminary Study
Patients undergoing shoulder arthroscopy in the beach chair position may be at risk for adverse neurologic events due to cerebral ischemia.
Dexmedetomidine, a potent alpha adrenoceptor agonist which dose-dependently reduces arterial blood pressure and heart rate, decreases the hemodynamic and catecholamine response in the perioperative period.
dexmedetomidine has an effect of peripheral vasoconstriction thus it is theologically appropriate for reducing bleeding for arthroscopic operation field.
The aim of this study is to evaluate the efficacy and the safety of dexmedetomidine on cerebral oxygen saturation, cognitive function, hemodynamic stability and operative field in patients undergoing arthroscopic shoulder surgery in the beach-chair position.
Arthroscopic Shoulder Surgery in the Beach-chair Position
|Study Design:||Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Prevention
- Regional cerebral oxygen saturation value [ Time Frame: T1,T2,T3, T4, T5,T6, T7, T8, T9 time of post-dose during surgery ] [ Designated as safety issue: No ]Before the anesthetic induction(T1), Before endotracheal intubation(T2), After endotracheal intubation(T3), Before the beach-chair position(T4), 5 minutes after the beach-chair position(T5), Before the operation(T6), 5 minutes after the incision(T7), After removal of the arthroscopy(T8), at the end of the operation(T9)
|Study Start Date:||July 2012|
|Study Completion Date:||May 2013|
|Primary Completion Date:||May 2013 (Final data collection date for primary outcome measure)|
|Experimental: dexmedetomidine continuous infusion||
dexmedetomidine 0.7mcg/kg/hr continuous infusion