ĐÁNH GIÁ HIỆU QUẢ LUYỆN GIỌNG Ở NGƯỜI BỆNH POLYP DÂY THANH SAU 1 THÁNG

Abstract

Background: Vocal fold polyps are benign lesions that commonly cause dysphonia and increased phonatory effort. Voice therapy is a conservative treatment, but treatment response may vary according to lesion characteristics. Objective: To evaluate changes in symptoms, polyp size, maximum phonation time (MPT), and Voice Handicap Index-10 (VHI-10) after 1 month of voice therapy in patients with fibrous, hemorrhagic, and gelatinous vocal fold polyps. Methods: A pre–post intervention study was conducted in 31 patients, including 13 fibrous, 12 hemorrhagic, and 6 gelatinous polyps. Outcomes were assessed before treatment and after 1 month. Paired changes were analyzed using the Wilcoxon signed-rank test, and changes across the three groups were compared using the Kruskal–Wallis test. Results: The proportion of patients reporting vocal fatigue/shortness of breath decreased from 64.5% to 25.8%, while globus decreased from 29.0% to 0%. Complete polyp disappearance occurred in 14/31 patients (45.2%), and 8/31 (25.8%) had size reduction. Mean MPT increased from 8.98 to 12.32 seconds (p<0.001), and mean VHI-10 decreased from 16.87 to 11.26 points (p<0.001). Changes in polyp size differed across groups (Kruskal–Wallis p=0.003), whereas changes in MPT and VHI-10 did not differ significantly (p=0.059 and p=0.084). Conclusion: After 1 month, voice therapy with vocal hygiene was associated with improvement in symptoms and voice function in this dataset, with greater morphological response in fibrous and hemorrhagic polyps. Controlled studies with longer follow-up are needed.

Keywords: vocal fold polyp; voice therapy; maximum phonation time; VHI-10; fibrous polyp; hemorrhagic polyp.