Objective To observe the effect of dexmedetomidine combined with remifentanil for children undergoing bronchofibroscopy. Methods Sixty sick children scheduled for bronchofibroscopy were enrolled.Combined Dexmedetomidine with remifentanil was used.The mean arterial pressure(MAP),heart rate(HR)and SpO_2 before anesthesia(T0),at inserting bronchofibroscope(T1),at completion of examination and at withdrawing the endoscope(T2)and at awake(T3)were recorded.Respiratory depression and laryngeal spasm during examina...