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Korean journal of anesthesiology v.58 no.6, 2010년, pp.527 - 531  
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Caudal analgesia reduces the sevoflurane requirement for LMA removal in anesthetized children

Kim, Joon-Sik    (Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea.   ); Park, Wyun Kon    (Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea.   ); Lee, Min-Huiy    (Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea.   ); Hwang, Kyu-Hyun    (Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea.   ); Kim, Hee-Soo    (Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicinie, Seoul, Korea.   ); Lee, Jeong Rim    (Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea.  );
  • 초록

    Background An anesthetic state can reduce adverse airway reaction during laryngeal mask airway (LMA) removal in children. However, the anesthetic state has risks of upper airway obstruction or delayed emergence; so possibly less anesthetic depth is advisable. Caudal analgesia reduces the requirement of anesthetic agents for sedation or anesthesia; it is expected to reduce the sevoflurane requirement for LMA removal. Therefore, we determined the EC 50 of sevoflurane for LMA removal with caudal analgesia and compared that to the EC 50 without caudal analgesia. Methods Forty-three unpremedicated children aged 1 to 6 yr were enrolled. They were allocated to receive or not to receive caudal block according to their parents' consent. General anesthesia were induced and maintained with sevoflurane and oxygen in air. EC 50 of sevoflurane for a smooth LMA removal with and without caudal analgesia were estimated by the Dixon up-and-down method. The LMA was removed when predetermined end-tidal sevoflurane concentration was achieved, and the sevoflurane concentration of a subsequent patient was determined by the success or failure of the previous patient with 0.2% as the step size; success was defined by the absence of an adverse airway reaction during and after LMA removal. EC 50 of sevoflurane with caudal block, and that without caudal block, were compared by a rank-sum test. Results The EC 50 of sevoflurane to achieve successful LMA removal in children with caudal block was 1.47%; 1.81% without caudal block. The EC 50 were significantly different between the two groups (P Conclusions Caudal analgesia significantly reduced the sevoflurane concentration for a smooth LMA removal in anesthetized children.


  • 주제어

    Caudal analgesia .   Laryngeal mask airway .   Sevoflurane.  

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