İnönü Üniversitesi Tıp Fakültesi Dergisi

Objective: There has been no study evaluating sevoflurane minimum alveolar concentration for the laryngeal mask airway (LMA) removal (MAC-LMA removal) in children whom caudal anesthesia was performed. The aim of this study is to determine the MAC-LMA removal of sevoflurane in children caudal anesthesia was performed. Materials and Methods: Fifty-six children undergoing elective urologic surgery for <2 h under general anesthesia were studied. After sevoflurane induction, children were randomized to receive LMA insertion with or without caudal anesthesia. The LMA was removed at the end of surgery when the end-tidal sevoflurane concentration had reduced to a predetermined level with 0.2% as a step size by an anesthesiologist blinded to group allocation. When LMA removal was accomplished without coughing, teeth clenching, gross purposeful movement, breath holding or laryngospasm, during or within 1 min after removal, it was considered successful. Results: The MAC-LMA removal of sevoflurane was 1.60% in the group with caudal anesthesia and 1.72% in the group without caudal anesthesia. Conclusion: Caudal anesthesia did not reduce the MAC-LMA removal of sevoflurane in children aged 2 mo and 8 yr. Further studies are necessary to establish whether caudal block effect the removal of LMA in infant and children during sevoflurane anesthesia.