Tsuji Domingos H, de Almeida Edigar R, Sennes Luiz Ubirajara, Butugan Ossamu, Pinho Silvia M R
Department of Otolaryngology, Sao Paulo University Faculty of Medicine, São Paulo, Brazil.
J Voice. 2003 Dec;17(4):596-604. doi: 10.1067/s0892-1997(03)00071-7.
The purpose of this paper was to compare the vibration of the vocal fold submitted to Isshiki thyroplasty type I (TPI) to that of the contralateral one adducted by the arytenoid rotation (AR) technique. The vocal folds of ten human fresh excised larynges were medialized by TPI on one side and by rotation of the arytenoid on the contralateral side. Laryngeal vibration was artificially produced and was recorded by videostroboscopy. The images were subjectively and objectively analyzed. Subjective analysis included periodicity of vibratory cycles, features of the mucosal wave present on the TPI side, amplitude of vibration, and profile of free border of each vocal fold during the opening phase. Objective analyses were carried out on frame-by-frame digitalized images to determine amplitudes of vibrations and phase differences between the folds in three glottic regions (anterior, middle, and posterior). Subjective analysis revealed regular periodicity in 100% of the larynges, a decrease in the mucosal wave on the TPI side in 70%, reduction in amplitude in 30%, and a sigmoid profile of the free border on the TPI side in 80%. Objective analysis showed mean amplitude in the posterior glottic region on the TPI side significantly larger than that on the arytenoids rotation side and phase asymmetry in 90% of the larynges.
本文的目的是比较接受I型Isshiki甲状腺成形术（TPI）的声带振动与通过杓状软骨旋转（AR）技术内收的对侧声带振动。对10例新鲜切除的人喉，一侧通过TPI使声带内移，对侧通过杓状软骨旋转使声带内移。人工产生喉部振动并通过频闪喉镜记录。对图像进行主观和客观分析。主观分析包括振动周期的周期性、TPI侧出现的黏膜波特征、振动幅度以及每个声带在开放期的游离缘轮廓。对逐帧数字化图像进行客观分析，以确定三个声门区域（前部、中部和后部）声带的振动幅度和相位差。主观分析显示，100%的喉部有规则的周期性，70%的喉部TPI侧黏膜波减少，30%的喉部振动幅度减小，80%的喉部TPI侧游离缘呈S形轮廓。客观分析表明，TPI侧声门后部区域的平均幅度明显大于杓状软骨旋转侧，90%的喉部存在相位不对称。
