小儿麻醉期间氧化亚氮对双腔喉罩套囊内压的影响.pdfVIP

上海 交通大学学 报 (医学版 ) l492 Journal of Shanghai Jiaotong University(Medical Science) Vo1．27 No．12 Dec．2o07 文章编号： 0258—5898(2007)12—1492—03 · 临床研究· 小儿麻醉期间氧化亚氮对双腔喉罩套囊内压的影响 李春华。 陈锡明。 尤新民 (上海交通大学 医学院新华医院麻醉科，上海 200092) 摘 要：目的 研究小儿麻醉期间氧化亚氮(N O)对双腔喉罩套囊内压的影响。方法 择期手术小儿32例，麻醉诱导后置人双 腔喉罩，随机分成两组，分别向喉罩套囊内预注空气(A组)或50％N O(N组)使套囊内压至20 mmHg。术中持续吸人50％ N，O 并监测喉罩套囊内压。结果 术中A组喉罩套囊内压逐渐上升至(40 6±9 3)mmHg(P0 05)，而N组套囊内压略有下降。术 后拔管空气组套囊内气体量明显增加，而N组则无明显变化(4．4±2．3)mL VS(2．6±1．0)mL，(P0．05)。术后 A组有2例 发生咽痛，N组无咽痛发生。结论 小儿麻醉期间吸入N O使双腔喉罩套囊内压明显升高，套囊内预充50％N，O可以防止喉罩 套囊内压的升高。 关键词：双腔喉罩； 套囊内压； 氧化亚氮； 小儿麻醉 中图分类号：R614 1 文献标志码：A Effect of nitrous oxide on cuff pressure of ProSeal laryngeal mask airway during pediatric anesthesia - LI Chun—hua，CHEN Xi—ming，YOU Xin—min (Department of Anesthesiology，Xinhua Hospital，School of Medicine，Shanghai Jiaotong University，Shanghai 200092，China) Abstract： Objective To evaluate the effect of nitrous oxide(N2 O)on the cuff pressure of ProSeal laryngeal mask airway(PLMA)in pediatric anesthesia Methods Thirty—two pediatic patients were enrolled and divided into two groups randomly．PLMA cuffs were in— flated with air(Group A)or 50％ N2 O／oxyen(Group N)to 20 mmHg as initial pressure．The intracuff pressure was monitored during anesthesia with 50％ N2 O in oxygen． Results Intracuff pressure increased to(40．6±9．3)mmHg in Group A and slightly decreased in Group N．Deflation volume in Group A was much more than that in Group N[(4 4±2 3)mL VS(2．6±1．0)mL，P0．05]．Two patients complained of sore throat in Group N，while nobody did in Group A． Conclusion Inflation of the cuff with air prior to admi— nistration of N2 O results in high intracuff pressure．In contrast，inflation of the cuff with the gas mixture of 50％ N2 O／oxyen can maintain stable intracuff pressure． Key words： ProSeal laryngeal mask airway； intracuff pressure；