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KMID : 0374019910140040403
Ewha Medical Journal
1991 Volume.14 No. 4 p.403 ~ p.410
A Clinical study of Stroboscopic Excomination for Voice Disorders

Abstract
Stroboscopy is very useful for clinical evaluation of abnormality in the mode of vocal cord vibration. With good trained eyes, one can detect changes in physical parameters of histological changes in the vocal cord to a certain extent.
Stroboscopic examination was performed on 149 cases who complained of voice disorders at the Department of Otolarynglogy of Ewha Womans university hospital recently and the ¢¥following results were obtained.
1) The underlying diseases in order frequency were vocal nodule and polyp 67cases(45% acute and chronic laryngitis 32cases(22% ), benign tumor 16cases(11 % ), vocal cord paralysis i5cases(10%), sulcus vocalis 8cases(5%), laryngeal cancer 6cases(4%), epithelial hyperplasia 5cases(3%).
2) Glottic closure in pathological cases were as that follows : Among 149cases, incomplete closure were 112cases(75 %) and complete closure were 37cases{25 % ).
3) Regularity of vibration in pathological cases were as that follows : Among 149cases, irregular were 82cases(55%) and regular were 67cases(45%).
4) Symmetry of vibratory movements of vocal cords in pathological cases were as that follows : Among 149cases, asymmetywere 69cases(46 %) and symmetrywere 80cases(45 % ).
5) Amplitude of vibration in pathological cases were as that follows : Among 149cases, normal were 62cases(42%), great were 8cases(5%), small were 74cases(50%) and zero were 5cases(3%).
6) Wave on the mucosa "in pathological cases were as that follows : Among 149cases, normal were 62cases(42 % ), great were 2cases(1 % ), small were 62cases(42 %) and zero were 23cases(15 %)
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