THE CRICOTHYROID MUSCLE DOES NOT INFLUENCE VOCAL FOLD POSITION IN LARYNGEAL PARALYSIS
THE CRICOTHYROID MUSCLE DOES NOT INFLUENCE VOCAL FOLD POSITION IN LARYNGEAL PARALYSIS
复制标题
DOI：
10.1288/00005537-199504000-00005
复制
发表时间：
1995-04-01
期刊：
影响因子：
2.6
通讯作者：
JOHARJI, GM
中科院分区：
文献类型：
--
作者：
KOUFMAN, JA;WALKER, FO;JOHARJI, GM
由喉上神经支配的环甲肌的状态被认为会影响喉麻痹中声带的位置。一般认为，喉返神经的孤立病变通常会导致麻痹的声带处于旁正中位置，但如果上神经和喉返神经同时病变，则可能会出现更外侧（中间或尸体）的声带位置。 连续二十六个单侧声带麻痹患者接受经鼻纤维喉镜（TFL）和喉肌电图（LEMG）检查。通过TFL，声带位置为旁正中8例，中间7例，外侧11例；通过LEMG，13例患者有孤立性喉返神经病变，13例患者有联合（上和喉返神经）病变。声带位置与环甲肌状态之间没有相关性，即LEMG的环甲肌状态不能预测声带位置，也不能预测声带位置。通过 TFL 声带位置预测病变部位。此外，我们研究了甲杓肌募集（音调）的程度可能与声带位置相关的可能性，但没有发现任何关系。我们的结论是：1，环甲肌不会对单侧麻痹的声带位置产生可预测的影响； 2、甲杓肌募集（音调）似乎不会影响声带位置； 3、尚不清楚和未知的因素可能是决定喉麻痹声带位置的原因。
The status of the cricothyroid muscle, which is innervated by the superior laryngeal nerve, is believed to influence the vocal fold position in laryngeal paralysis, It is believed that isolated lesions of the recurrent laryngeal nerve generally result in the paralyzed vocal fold assuming a paramedian position but that with lesions of both the superior and recurrent laryngeal nerves, a more lateral (intermediate or cadaveric) vocal fold position can be expected.Twenty-six consecutive patients with unilateral vocal fold paralysis underwent transnasal fiberoptic laryngoscopy (TFL) and laryngeal electromyography (LEMG). By TFL, the vocal fold positions were paramedian in 8 patients, intermediate in 7, and lateral in 11, By LEMG, 13 patients had isolated recurrent laryngeal nerve lesions and 13 patients had combined (superior and recurrent laryngeal nerve) lesions.There was no correlation between the vocal fold position and the status of the cricothyroid muscle, i,e., the status of the cricothyroid muscle by LEMG did not predict the vocal fold position nor did the vocal fold position by TFL predict the site of lesion. In addition, we investigated the possibility that the degree of thyroarytenoid muscle recruitment (tone) might correlate with vocal fold position, but no relation was found, We conclude that 1, the cricothyroid muscle does not predictably influence the position of the vocal fold in unilateral paralysis; 2, thyroarytenoid muscle recruitment (tone) does not appear to influence vocal fold position; and 3, still unidentified and unknown factors may be responsible for determining vocal fold position in laryngeal paralysis.