Departments of Head and Neck Surgery of Ana Costa Hospital and Irmandade da Santa Casa da Misericórdia de Santos, Santos/SP, Brazil.
Acta Otorhinolaryngol Ital. 2009 Jun;29(3):144-50.
A retrospective study was conducted to analyse videokymographic findings from patients who underwent vertical frontolateral laryngectomy with reconstruction using a sternohyoid muscle flap. Overall, 22 patients with T1b and T2 glottic tumours and more than one year of follow-up were studied. Two experienced observers analysed the recorded videokymographic data. A cross-sectional descriptive design was used. The images showed the vocal vibratory behaviour during sustained /i/ phonation. The vibratory source was supraglottic in 7/22 patients, glottic in 11 and mixed in 4. The mean duration of the glottic cycles extracted from the supraglottic, mixed and glottic vibratory sources was 6.4 ms, 5 ms and 4.6 ms, corresponding to the fundamental frequency (f0) of 188.7 Hz, 200 Hz and 215.7 Hz, respectively. Of the 11 patients with a glottic vibratory source, 4 did not present a closed phase in the glottic cycle. The mean open quotient was 79%, 40% and 63%, for the supraglottic, mixed and glottic vibratory sources, respectively. All 11 reconstructed vocal cords presented a rounded lateral peak. Of the 15 preserved vocal cords, 11 presented a rounded lateral peak and 4 had sharp peaks. All patients with a glottic vibratory source presented a rounded medial peak. All the vocal cords evaluated presented a mucosal wave, which was normal in 3 patients with a glottic source and clearly reduced in the others. Only one case presented phase asymmetry. The mean values for the amplitude asymmetry index were 0.92 and 0.68, for the mixed and supraglottic vibratory sources, respectively.
一项回顾性研究分析了行垂直前外侧喉切除术并使用胸锁乳突肌肌瓣重建的患者的声门图检查结果。共有 22 例 T1b 和 T2 声门型肿瘤患者，随访时间超过 1 年。2 名经验丰富的观察者分析了记录的声门图数据。采用横截面描述性设计。图像显示了持续/i/发音期间的声带振动行为。在 22 例患者中，7 例为声门上型、11 例为声带型和 4 例为混合型。从声门上型、混合型和声带型振动源提取的声门周期的平均持续时间分别为 6.4ms、5ms 和 4.6ms，相应的基频（f0）分别为 188.7Hz、200Hz 和 215.7Hz。在 11 例具有声带振动源的患者中，有 4 例在声门周期中没有关闭相。声门上型、混合型和声带型振动源的平均开口商分别为 79%、40%和 63%。所有 11 例重建的声带均呈现圆形外侧峰。在 15 例保留的声带中，11 例呈现圆形外侧峰，4 例呈现尖锐的峰。所有具有声带振动源的患者均呈现圆形内侧峰。所有评估的声带均呈现黏膜波，其中 3 例声带源正常，其余声带明显减少。只有 1 例出现相位不对称。混合和声门上型振动源的振幅不对称指数的平均值分别为 0.92 和 0.68。
