全麻诱导中无呼吸期的安全时限观察

目的　观察小儿和成年人全麻诱导无呼吸期安全时限的差别。方法　选择 56例择期手术病人,其中小儿 31例,成人 25例。采用丙泊酚 (异丙酚 )3mg/kg、芬太尼 2ug/kg、咪达唑仑 0 15mg/kg和维库溴铵 0 1mg/kg诱导,用 6L/min氧流量面罩加压吸氧 5min后移去面罩并观察无呼吸期SpO2 下降至 95% ~90%和所需的时间,SpO2 降至 90%时立即面罩加压吸氧并记录SpO2 降至的最低值及SpO2恢复至对照值所需的时间。同时记录各时相的HR。结果　成年人吸氧后首次下降时间 (228. 5±8. 90 )s]和降至 95%和 90%所需时间分别为 (280 4±10 71 )s和 (321 5±11 14 )s]明显比小儿组 (160 6±5 76 )s, (199 7±8 67 )s, (230 8±6 71 )s]长。结论　在同样吸氧条件下,成年人无呼吸期的安全期限比小儿明显延长。

Comparison of Safe Apneic Period between Children and Adults during Anesthetic Induction

Objective To observe the difference in safe apneic duration between children and adults. Methods Fifty-six patients undergoing plastic operation were included in this study, among whom 31 ones were children and 25 were adults. They were given inductive anesthesia and breathed in oxygen through mask for five minutes. Then, SpO2 was measured continually by a Pacific PC560 pulse oximeter. Results The durations in which SpO2 decreased to 95%\ and to 90%\ were significantly longer in adults than in children\(199 7±8 67)s,(230 8±6 71)\]. Conclusion The safe apneic duration of adults was significantly longer than that of children following the inspiration of oxygen.