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目的探讨纤支镜检查中出现低氧血症的程度与规律。方法对接受纤支镜检查的１１０例病人随机分成吸氧组５０例，未吸氧组６０例，两组在检查前及检查过程中进行血氧饱和度（ＳａＯ２）、心电监测，及血气分析。结果吸氧组中各项指标无显著变化，而未吸氧组６０例中５７例（占９５％）ＳａＯ２下降，３６例发生心律紊乱（占６０％），ＰａＯ２平均下降１．１２ｋＰａ。结论部分纤支镜检查可以引起严重的低氧血症，并诱发心律紊乱等严重并发症，应予以重视。建议纤支镜检查前行心电图、血气分析等检查，并在术中应吸氧，同时进行血氧饱和度及心电监测。
Objective To investigate the degree and regularity of hypoxemia in bronchoscopy. Methods One hundred and ten patients undergoing bronchoscopy were randomly divided into oxygen inhalation group (n = 50) and non-oxygen inhalation group (n = 60). The oxygen saturation (SaO2), ECG and blood gas analysis. Results There were no significant changes in the indexes of oxygen inhalation group. 57 cases (95%) of the 60 cases without oxygen inhalation decreased SaO2, 36 cases had arrhythmia (60%), PaO2 average decreased 1.12 kPa. Conclusion Some fiberoptic bronchoscopy can cause serious hypoxemia and induce serious complications such as arrhythmia, which should be taken seriously. Recommended fiberoptic bronchoscopy before the line ECG, blood gas analysis and other tests, and during surgery should be oxygen, while oxygen saturation and ECG monitoring.