Résumé
Objective To investigate the effects of single dose of dexmedetomidine and fentynyl on treatment of emergence agitation in adult patients after general anesthesia.Methods Sixty patients suffering from emergence agitation after general anesthesia were divided into two groups randomly(n=30 each):dexmedetomidine group (group D)and fentaynl group (group F).Patients in group D received dexmedetomidine at a dose of 0.5μg/kg,and those in group F received fentanyl at a dose of 1μg/kg respectively.If patients still agitate after above treatment,intermission infusion of propofol at bolus of 1.0 mg/kg was used for further treatment till patients attain peaceful state.Results Twen-ty-nine paients in group D had no agitation,only one patient had mild agitation after administration of dexmedetomidine,while four patients had severe agitation,four patients had moderate agitation and 9 patients had mild agitation after administration of fentanyl(P<0.05);the time from first treatment to no agitation in group D was (11±3)min,shorter than that in group F (27±9)min (P<0.05);the dose of propofol used in group D was (50±0)mg,less than accumulative doses of propofol in group F (270±40)mg (P<0.05);21 (70%)patients in group D had radycardia and 9 (30%)patients in group F had respiratory depression(P<0.05).Conclusion Intravenous dexmedetomidine at a dose of 0.5 μg/kg attainted was effective in treating emergence agitation in adult patients after general anes-thesia as compared with fentanyl.