Clinical experience of applying laryngeal mask to cranioplasty

Objective:To observe clinically the efficacy and safty of applying laryngeal mask airway to cranioplasty by intravenous anesthesia with remifentanil-propofol.Methods: 20 patients with ASA I～Ⅱundergone selective cranioplasty by anesthesia induction with intravenous infusion of 2 mg/kg propofol and 1 μg/kg remifentanil were investigated.Those cases were inserted laryngeal mask airway(LMA) after induction of 3 to 5 minutes with deprived consciousness to maintain themselves spontaneously breathing during operation.Combination of intravenous infusion of 5 mg/(kg·h) propofol and 0.1 μg/(kg·h) remifentanil was used for maintenance of anesthesia.Local infiltration anesthesia with 0.5% lidocaine was administered in operative site instantly before operation,and those data of change of HR,BP,SpO_2,RR and consciousness recovery after operation were recorded.Results: All the 20 cases had got a satisfactory efficacy of anesthesia.Recordings of HR,BP,SpO_2 and RR showed no statistical difference(P0.05) during the operation.The score of OAA/S≥4 was(7.53±2.56) min.No complications as low blood pressure,nausea,vomiting or bradycardia were observed except for transient respiratory depression occurrence in 4 cases and restlessness in 1 case after operation. Conclusion: Combined application of laryngeal mask airway under intravenous infusion of remifentanil and propofol anesthesia is safe and reliable in cranioplasty.