Conclusions: Children's middle-ear diseases, such as negative pressure, SOM, AOM, and atrophic scar on the ear drum, may influence the results of DPOAE.
结论：儿童的中耳疾病，如中耳负压、中耳积液、急性中耳炎、鼓膜萎缩性瘢痕，均可能造成变频耳声传射的消失。
To wash tympanum with drum washer developed by authors after the middle ear was washed cleanlily and dry, the powder of prednisone of mildew element can be spraied into the middle ear.
方法 ：应用自制鼓室冲洗器冲洗鼓室 ，干净后向鼓室内喷入制霉菌素强的松粉。
To wash tympanum with drum washer developed by authors after the middle ear was washed cleanlily and dry, the powder of prednisone of mildew element can be spraied into the middle ear.
方法 ：应用自制鼓室冲洗器冲洗鼓室 ，干净后向鼓室内喷入制霉菌素强的松粉。
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