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鼓膜凹陷或内陷,比正常耳贴近中耳内壁时称中耳萎陷症。鼓膜内陷的程度不一,可以是整个鼓膜内陷,也可能是部分鼓膜内陷,而以鼓膜后上象限内陷最常见。根据鼓膜内陷程度可以分为四度:鼓膜内陷(Ⅰ度)、严重内陷(Ⅱ度)、中耳萎陷(Ⅲ度)、粘连性中耳炎(Ⅵ度)。咽鼓管吹张是临床上常用的治疗方法。最近,作者观察了13例中耳萎陷症,对咽鼓管吞咽吹张术的应用价值提出质疑。临床资
Tympanic membrane depression or retraction, than the normal ears close to the middle ear wall, said middle ear collapse. Tympanic membrane invaginations of varying degrees, can be the entire tympanic membrane retraction, it may be part of the tympanic membrane retraction, and the tympanic membrane quadrant retraction of the most common. According to the extent of tympanic membrane collapse can be divided into four degrees: tympanic retraction (Ⅰ degree), severe retraction (Ⅱ degree), middle ear collapse (Ⅲ degree), otitis media (Ⅵ degree). Eustachian tube blowing Zhang is commonly used in clinical treatment. Recently, the authors observed 13 cases of middle ear vertigo and questioned the value of eustachian tube swallowing. Clinical funding