Clinic Value of the Vocal Acoustics on Voice Evaluation in Patients with Larynx Leukoplakia / 天津医药

ABSTRACT

Objective To explore the clinic value of the vocal acoustics on voice evaluation in larynx leukoplakia pa?tients. Methods Dr. Speech software was used to perform voice acoustic analysis and deduce EGG parameters in 48 sub?jects with larynx leukoplakia and 50 normal subjects. Voice acoustic analysis parameters (Jitter, Shimmer, NNE, HNR, SNR, MPT), EGG parameters ( EGG-Jitter、EGG-Shimmer、EGG-NNE、EGG-HNR、EGG-SNR, CQP,CIP) and EGG wave?form were compared between two groups. Results For voice acoustic analysis, Jitter, Shimmer, NNE in larynx leukoplakia group were higher than those in normal group while HNR, SNR in larynx leukoplakia group were lower than those of normal group. What’s more,MPT in larynx leukoplakia group was obviously shorter than that in normal group with, statistically sig?nificant difference (P<0.05). For EGG analysis, EGG-Jitter, EGG-Shimmer, EGG-NNE were higher in larynx leukoplakia group than those in normal group with significant difference (P<0.05). EGG-HNR and EGG-SNR in larynx leukoplakia group were lower than those in normal group. Furthermore, CQP and CIP in larynx leukoplakia group were higher than those normal group with statistically significant difference (P<0.05). Most patients’(72.9%) EGG waveform showed gradually ac?celerate phase velocity and fast close phase, which represent a spike-like shape. Conclusion Voice acoustic analysis com?bined with EGG provide objective indicators to assess degree of hoarseness, and to provide sonic evidences for prevention, recurrence, assessment and pronunciation correction of the larynx leukoplakia.