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目的:验证“新型面罩”是否可减少二氧化碳的重复吸入。方法:40例ASAⅠ～Ⅱ级患儿40例,随机分为常规面罩组(对照组)和新型面罩组(实验组),观察全麻下f(呼吸频率)、FiCO2(吸入二氧化碳分压)、PETCO2(呼吸末二氧化碳分压)的变化。结果:静吸复合麻醉下,实验组的PaCO2(动脉血二氧化碳分压)(40.9±4.09)mm Hg明显低于对照组的PaCO2(53.22±7.02)mm Hg,有统计学差异(P<0.01)。且随着手术时间的延长,对照组的PETCO2有逐渐增高的趋势,二实验组基本维持于正常水平。结论:新型面罩可明显减少二氧化碳重复吸入,减少高二氧化碳血症的发生。
Purpose: To verify if “New Mask” reduces repeated inhalation of carbon dioxide. Methods: Forty ASA grade Ⅰ ~ Ⅱ children (40 ASA Ⅰ ~ Ⅱ) were randomly divided into routine mask group (control group) and new mask group (experimental group). The changes of f (respiratory rate), FiCO2 PETCO2 (end-tidal carbon dioxide partial pressure) changes. Results: The PaCO2 (40.9 ± 4.09) mm Hg in the experimental group was significantly lower than that in the control group (53.22 ± 7.02 mm Hg) under static combined inhalation anesthesia (P <0.01) . With the extension of operation time, the PETCO2 in the control group showed an increasing tendency, and the two experimental groups basically maintained normal levels. Conclusion: The new mask can significantly reduce repeated inhalation of carbon dioxide and reduce the incidence of hypercapnia.