 Materials and Methods: Forty children under 12 years of age scheduled for rigid bronchoscopy were included. After midazolam premedication, remifentanil infusion 1 μgkgmin was started and patients were randomly allocated to receive either propofol Group P or ketamine Group K and mivacurium for muscle relaxation. Anesthesia was maintained with remifentanil infusion 1 μgkgmin and bolus doses of propofol or ketamine. After rigid bronchoscopy remifentanil 0.05 μgkgmin was maintained until extubation. Hemodynamic parameters, emergence characteristics and adverse events were evaluated. 