Effects of Electroglottography on Screening Vocal Fold Disorders / 听力学及言语疾病杂志

ABSTRACT

Objective To study the effects of Electroglottography(EGG) on screening vocal fold disorders.Methods 134 cases of glottal carcinoma and 167 benign vocal diseases and 62 healthy volunteers were measured. EGG waveform and variables were analyzed to investigate the sensitivity and specificity of EGG measurement.Results Compared with healthy people, the majority of EGG waveform and variables of vocal fold disorders were abnormal. The differences were significant statistically either between healthy people and vocal fold disorders or between benign vocal diseases and malignancy. In benign vocal diseases, the differences of EGG waveform and variables among vocal polyp and cyst and leukoplakia were insignificant statistically, and nor were the differences among various clinical T stages in glottal carcinoma.Conclusion EGG measurement is sensitive to screen vocal fold disorders, and is specific to distinguish benign and malignant diseases, but it couldn not be used to identify the types or clinical stage of the diseases.