Department of Speech-Language Pathology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
J Voice. 2023 Jul;37(4):634.e1-634.e18. doi: 10.1016/j.jvoice.2021.02.024. Epub 2021 Apr 10.
To verify the effect of nebulization on the voice of dysphonic and non-dysphonic individuals on acoustic, perceptual-auditory, aerodynamic, electroglottographic, laryngeal parameters and on the self-perception of vocal discomfort.
All the research subjects were submitted to vocal evaluation, laryngeal and voice self-perception. Then, the participants remained in vocal rest for a period of 10 minutes and the analysis mentioned above were again performed. After this first stage, the participants were submitted to the nebulization for a period of 10 minutes and the all analysis above were again performed. Descriptive analysis of the variables was carried. In the comparison of the pre- and post-nebulization groups, the Paired T-Student Test was used for variables with non-dysphonic distribution and the Wilcoxon Test for variables with asymmetric distribution. When categorical variables were evaluated (perceptual-auditory evaluation and laryngeal assessment), the Pearson's Chi-square test was used. In all analysis, a significance level of 5% was considered. The intra-rater agreement in the auditory-perceptual and perceptual-visual assessment was assessed using the AC1 statistic, using the R program. For this purpose, 20% of the voice samples and laryngeal images were replicated blindly and interpreted by the evaluators at the time evaluations.
The results of this research show that non-dysphonic individuals have more positive vocal and laryngeal effects after nebulization than dysphonic ones. It is also observed that the EGG measurement was the most sensitive to the effect of nebulization, with an increase in the Closed quotient (CQ) in all groups evaluated. Regarding acoustic measurements, it is noted that the effect of nebulization in men is more evident than in women. After nebulization, there was an increase in fundamental frequency in the group of non-dysphonic women and dysphonic and non-dysphonic men. A decrease in the amplitude perturbation quotient values is observed in all groups, besides a reduction in the pitch perturbation quotient values after nebulization in non-dysphonic men groups. There was improves aerodynamic efficiency in groups of dysphonic and non-dysphonic men and in the self-perception of vocal discomfort in all groups studied after the hydration procedure. The results of this study demonstrate a significant improvement in the mucosal wave after nebulization in the groups of women and men who are not dysphonic.
The nebulization procedure with saline solution improves acoustic measurements, the electroglottographic closed quotient and vocal self-perception of dysphonic and non-dysphonic women and men. Nebulization increases the mucosal wave of the vocal folds in non-dysphonic women and men and improves the aerodynamic efficiency of men.
验证雾化对发音障碍和非发音障碍个体的声音在声学、感知听觉、气流动力学、声门图、声带参数以及对嗓音不适的自我感知的影响。
所有研究对象均接受嗓音评估、喉部和嗓音自我评估。然后，参与者在 10 分钟内保持声带休息，并再次进行上述分析。在第一阶段之后，参与者接受 10 分钟的雾化，并再次进行所有上述分析。对变量进行描述性分析。在比较雾化前后组时，对于非发音障碍分布的变量使用配对 T 检验，对于非对称分布的变量使用 Wilcoxon 检验。当评估分类变量（感知听觉评估和喉部评估）时，使用 Pearson 卡方检验。在所有分析中，均以 5%的显著水平进行评估。使用 R 程序评估听觉感知和感知视觉评估中的观察者内一致性，使用 AC1 统计量。为此，盲法复制了 20%的语音样本和喉部图像，并由评估者在评估时进行解释。
本研究结果表明，雾化后非发音障碍个体的嗓音和喉部效果比发音障碍个体更积极。还观察到 EGG 测量对雾化效果最敏感，所有评估组的闭合商（CQ）均增加。关于声学测量，注意到雾化对男性的影响比女性更明显。雾化后，非发音障碍女性和发音障碍和非发音障碍男性的基频增加。所有组的振幅微扰商值均下降，非发音障碍男性组雾化后音高微扰商值下降。在所有研究组中，雾化后气流动力学效率提高，在所有研究组中，雾化后嗓音不适的自我感知得到改善。本研究结果表明，在非发音障碍的女性和男性组中，雾化后黏膜波显著改善。
生理盐水雾化程序可改善发音障碍和非发音障碍女性和男性的声学测量、声门图闭合商和嗓音自我感知。雾化增加了非发音障碍女性和男性声带的黏膜波，并提高了男性的空气动力学效率。
