结论经口咽通气管内吸痰法较经鼻腔直接吸痰法效果好，且吸痰过程中不影响氧疗效果。
Conclusion Sputum drainage through oropharyngeal airway is more effective than through nasal cavity directly, and it will not affect oxygen therapy during its process.
方法对10 8例肺炎患儿采用低负压电动吸痰法，采集气管内及咽部痰液各一份，作多酶体显微镜检查。
Method 108 cases of patients with pneumonia were selected as sample, sputum collecting was conducted by low negative pressure electric collector for each patients, and analyzed by microscope.
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