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Adverse Events
Values are presented as the number of patients. Treatment needed bradycardia, heart rate < 45 beats/min. Control: group with receiving normal saline, D-0.5: group with receiving 0.5 ug/kg of dexmedetomidine, D-1: group with receiving 1 ug/kg of dexmedetomidineover 10 min prior to spinal anesthesia. *P < 0.05 when compared to control group.
