近来人们注意到喉麻痹可以引起声门结构的复杂改变，麻痹侧声带不仅麻痹、缩短「患测产带与健侧声带的长度之比（PVF／NVF）减小〕，而且当声带处于外展位时，声带的膜部与软骨部门的夹角tVFA）减小，发声时健侧声带代偿性缩短、内收以期和患侧声带闭会发音，但声门后隙关闭不 It has recently been noticed that laryngeal paralysis can cause complex changes in the structure of the glottis. Paralysis of the vocal cords not only paralyzes and shortens the “ratio of the length of the affected zone to the contralateral vocal cords (PVF / NVF)”, but also when the vocal cords are in the abduction When the vocal cords and cartilaginous part of the angle tVFA) decreases, the sound contractions of the contralateral vocal fold shortening, adduction period and ipsilateral vocal cord will be closed, but the glottis back off is not