Abstract
As phonosurgery is widely performed, phoniatric examination is getting popular in many clinics. However, nobody knows its exact clinical implication. Hence, it is very reasonable to analyze the results of the phoniatric examination from the viewpoint of clinical application. In this study, conditioned voices in four groups, normal, massive, stiffened and insufficient glottal closure were employed for the measurement of simultaneous display of the pitch, intensity and airflow during phonation. Examinees phonated at easy, minimum and maximum intensity. The phoniatric data obtained were statistically analyzed. The results are as follows;(1) At easy phonation, significant difference was obtained between normal and pathological groupes at least in one of parameters of pitch, intensity and airflow.(2) At minimum intensity phonation, significant difference was observed between normal and massive vocal folds like polypoid and nodules in every parameter.(3) At maximum intensity phonation, significant difference was not obtained between normal and stiffened vocal folds like vocal cancer, while it was observed in every parameter at minimum intensity phonation.(4) In cases of insufficient glottal closure like unilatral recurrent laryngeal nerve paralysis, it was revealed that there was significant difference from the normal only in one parameter, intensity, at maximum intensity phonation.
