一种评估声带内移术后声学和空气动力学影响的离体模型：带与不带杓状软骨内收的比较。
An Ex-vivo Model Examining Acoustics and Aerodynamic Effects Following Medialization With and Without Arytenoid Adduction.
机构信息
Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Otolaryngology Head and Neck Surgery, University of Cincinnati, Cincinnati, Ohio, USA.
出版信息
Laryngoscope. 2023 Mar;133(3):621-627. doi: 10.1002/lary.30235. Epub 2022 Jun 2.
OBJECTIVES/HYPOTHESIS: Quantify differences in acoustics and intraglottal flow fields between Thyroplasty Type 1 (TT1) with and without arytenoid adduction (AA) using excised canine larynx model.
STUDY DESIGN
Basic science experiments using excised larynges.
METHODS
Surgical procedures were implemented in eight excised canine larynges. Acoustics and intraglottal flow measurements were taken at low and high subglottal pressures in each experimental setup.
RESULTS
In all larynges, vocal efficiency (VE) and cepstrum peak prominence (CPP) were higher, and the mean phonatory flow rate was lower in TT1 with AA than without AA. The glottal asymmetry is reduced with AA and promotes the formation of stronger vortices in the glottal flow during the closing phase of the vibrating folds.
CONCLUSIONS
Findings suggest a clear acoustic and aerodynamic benefit to the addition of AA when performing TT1. It shows significant improvement in CPP, translating to decreased breathiness and dysphonia and increased VE, leading to easier and more sustainable phonation. Stronger intraglottal vortices are known to be correlated with the loudness of voice produced by phonation.
LEVEL OF EVIDENCE
N/A Laryngoscope, 133:621-627, 2023.
目的/假设：使用离体犬喉模型，量化 1 型甲状软骨成形术（TT1）联合和不联合杓状软骨内收（AA）时的声学和声门内流场的差异。
研究设计
使用离体喉的基础科学实验。
方法
在 8 个离体犬喉中实施手术程序。在每种实验设置下，在低和高声门下压力下进行声学和声门内流测量。
结果
在所有的喉中，联合 AA 的 TT1 的声效率（VE）和倒频谱峰值突出度（CPP）更高，而平均发音流率更低。AA 降低了声门的不对称性，并在振动褶皱关闭阶段促进了更强的声门内涡流的形成。
结论
研究结果表明，在进行 TT1 时，联合 AA 具有明显的声学和气动优势。它在 CPP 方面有显著的改善，这意味着呼吸声和嗓音障碍的减少，VE 的增加，从而使发音更容易和更可持续。已知更强的声门内涡流与发声的音量有关。
证据水平
N/A 喉镜，133:621-627, 2023.
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