END-TIDAL SEVOFLURANE CONCENTRATIONS FOR LARYNGEAL MASK AIRWAY INSERTION AND FOR TRACHEAL INTUBATION IN CHILDREN

被引:66
作者
TAGUCHI, M [1 ]
WATANABE, S [1 ]
ASAKURA, N [1 ]
INOMATA, S [1 ]
机构
[1] MITO SAISEIKAI GEN HOSP,DEPT ANESTHESIA,PAIN CLIN & CLIN TOXICOL,MITO,IBARAKI 31141,JAPAN
关键词
ANESTHETIC TECHNIQUES; LARYNGEAL MASK INSERTION; TRACHEAL INTUBATION ANESTHETICS; VOLATILE; SEVOFLURANE;
D O I
10.1097/00000542-199409000-00016
中图分类号
R614 [麻醉学];
学科分类号
100217 ;
摘要
Background: Sevoflurane, a new inhalational anesthetic agent characterized by a low blood-gas partition coefficient and nonpungent odor, appears suitable as an induction agent for children. The laryngeal mask airway is a new device for maintaining airway patency during anesthesia. This study was conducted to determine the sevoflurane concentrations required for insertion of a laryngeal mask (MAC(LMI)) and for tracheal intubation (MAC(TI)) in children. Methods: Forty-two patients, aged 1-9 yr, scheduled for surgery during general anesthesia were randomly assigned into two groups: MAC(LMI) (n = 21) and MAC(TI) (n = 21). After the predetermined end-tidal concentration had been established and maintained for 20 min, laryngeal mask insertion or tracheal intubation was attempted without neuromuscular relaxants or other adjuvants. Each concentration at which laryngeal mask insertion or tracheal intubation was attempted was predetermined by the up-and-down method (with 0.5% as a step size). Results: Sevoflurane MAC(LMI) was 2.00 +/- 0.28%. Sevoflurane MAC(TI) was 2.83 +/- 0.34%, significantly greater than MAC(LMI). Conclusions: Laryngeal mask insertion can be performed at a lesser sevoflurane concentration than that required for tracheal intubation.
引用
收藏
页码:628 / 631
页数:4
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