Effect of Voice Training on Vocal Function for Patients with Early Vocal Fold Polyps / 中国康复理论与实践

Objective:To investigate the clinical effect of voice training on the vocal function of patients with early vocal fold polyps. Methods:From May, 2016 to May, 2018, 80 patients with unilateral wide-based vocal fold polyps were randomly divided into control group (n = 40) and experimental group (n = 40). Both groups underwent voice hygiene education, and the experimental group accepted voice training, 40 minutes a week for twelve weeks in addition. They were evaluated with fiber laryngoscope, voice handicap index (VHI) and the computer phonatory detection before and after training. Results:Five in the control group and seven in the experimental group were dropped out. After training, the cure rate and the improvement rate of vocal fold polyps were significantly higher in the experimental group than in the control group (χ2 = 24.608, P < 0.001). The scores of VHI significantly improved in the experimental group (t/Z > 11.701, P < 0.05), and were better than those in the control group (t/Z > 7.027, P < 0.001). The scores of jitter, shimmer, and maximum phonation time improved (|t/Z| >5.012, P < 0.001) after training in the experimental group, and were better than those in the control group (t/Z > 4.596, P < 0.001). Conclusion:Voice training could improve the vocal function of patients with early vocal fold polyps, reduce hoarseness, and improve the voice quality.

Voice Analysis after the Vertical Partial Laryngectomy / 대한이비인후과학회지

BACKGROUND AND OBJECTIVES: It is generally believed that reconstruction of the glottic region after vertical partial laryngectomy (VPL) can improve glottic and supraglottic function. But reports on secondary healing without glottic reconstruction after VPL are lacking. This study attempts to obtain an objective phonatory data after VPL without glottic reconstruction. MATERIALS AND METHODS: From 1993 to 2001, 13 patients, who had been treated with VPL without glottic reconstruction, and 44 patients who underwent VPL were included in this study. Patients who had been followed up postoperatively less than 12 months were excluded from this study. Seven lesions were classified as T1 glottic cancer and six as T2 glottic cancer ; classic VPL (11 cases) and frontolateral VPL (2 cases). For the evaluation of voice, acoustic (fundamental frequency (Fo), jitter, shimmer, noise to harmonic ratio (NHR)), aerodynamic (maximal phonation time (MPT), mean flow rate (MFR)) analysis and videostroboscopy were done. RESULTS: There were significant differences in Fo, jitter, shimmer, NHR, MPT and MFR between VPL group and the normal control group. In videostroboscopy, the following tendencies were observed in many cases: incopmplete glottic closure, decreased and irregular mucosal wave and amplitude, supraglottic voicing, abnormal arytenoid movement and anterior commissure blunting. CONCLUSION: We had objective phonatory data after VPL without glottic reconstruction, which showed that voice quality after VPL without glottic reconstruction were somewhat unsatisfactory. Further studies on other surgical techniques of VPL would help to elucidate better ways of improving voice quality in these patients.

Vocal Analysis after Vertical Partial Laryngectomy

It is generally believed that a reconstruction of the glottic region after a vertical partial laryngectomy (VPL) can improve the glottic and supraglottic function. However, there is a paucity of reports on secondary healing without a glottic reconstruction after a VPL. The aim of this study was to obtain objective phonatory data after a VPL without a glottic reconstruction. From 1993 to 2001, 13 patients, who had been treated with VPL without a glottic reconstruction, were enrolled in this study. Patients with a postoperative follow up of less than 12 months were excluded. Seven lesions were classified as T1 glottic cancer and six as T2 glottic cancer- standard VPL (11 cases) and frontolateral VPL (2 cases). Acoustic ( (fundamental frequency, Fo), jitter, shimmer, the noise to harmonic ratio (NHR) ), aerodynamic (maximal phonation time (MPT), mean flow rate (MFR) ) analysis and videostroboscopy were performed to evaluate the voice. There were significant differences in the Fo, jitter, shimmer, NHR, MPT and MFR between the VPL group and normal control group. In videostroboscopy, the following tendencies were observed in many cases: incomplete glottic closure, a decreased and irregular mucosal wave and amplitude, supraglottic voicing, abnormal arytenoid movement and anterior commissure blunting. Objective phonatory data after VPL without a glottic reconstruction was obtained. The voice quality after a VPL without a glottic reconstruction was somewhat unsatisfactory. A further comparison with other different surgical techniques of a VPL would help determine a better way of improving the voice quality in these patients.

Voice and Imaging Analysis After Thyroplasty Type l in the Treatment of Unilateral Vocal Paralysis / 대한이비인후과학회지

BACKGROUND AND OBJECTIVES:There are several methods to improve voice quality in the patients with paralyzed vocal cord, such as thyroplasty type I, injection, arytenoid adduction. The goal of surgical medialization of the paralyzed vocal fold is to attain complete glottic closure. The purpose of this study is to evaluate the effectiveness of thyroplasty type I through qualifying the vocal function and glottal gap. MATERIALS & METHODS: We experienced 20 cases of unilateral vocal fold paralysis who underwent thyroplasty type I. We performed preoperative and postoperative videoimage analysis (normalized glottal gap area) and computer-assisted voice analysis in all patients. RESULTS: The glottal gap was significantly reduced after thyroplasty type I. Postoperative voice quality was characterized by an improved pitch and amplitude perturbation (jitter and shimmer), maximum phonation time and subglottic pressure . But noise to harmonic ratio was not improved. CONCLUSION: Thyroplasty type I is an effective method in the point of regaining glottal closure and vocal function.