Journal of voice : official journal of the Voice Foundation · 2020
Low-Dose LEMG-Guided Botulinum Toxin Type A Injection for Intractable Vocal Process Granulomas.
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Ho Che-Fang, Lee Yi-Chan, Hsin Li-Jen, Lee Li-Ang, Li Hsueh-Yu, Fang Tuan-Jen
Аннотация
OBJECTIVE: Vocal process granuloma (VPG) has a varied treatment success rate and may frustrate patients and physicians due to poor outcomes. There is still a lack of standard protocols to manage VPG. This study aimed to review the efficiency of a standardized low-dose laryngeal electromyographic (LEMG)-guided botulinum toxin A (BTA) injection in intractable vocal granulomas.
METHODS: Twenty-four patients with intractable VPG were recruited. All patients underwent percutaneous LEMG-guided BTA injection on the thyroarytenoid-lateral cricoarytenoid muscle complex in an office setting. The injecting dose was standardized to 1 U in 0.1 mL normal saline at a time. We evaluated the treatment effect by measuring the lesion size with serial laryngoscope evaluations.
RESULTS: The postinjection follow-up time varied from 3 to 23 months. Twenty-one patients (87.5%) experienced complete regression of the granuloma over 1-7 months (median 3 months). No major adverse effects were noted during the follow-up period.
CONCLUSION: For recalcitrant VPG, LEMG-guided low-dose BTA injection has the potential to be a safe, efficient, and effective treatment.
METHODS: Twenty-four patients with intractable VPG were recruited. All patients underwent percutaneous LEMG-guided BTA injection on the thyroarytenoid-lateral cricoarytenoid muscle complex in an office setting. The injecting dose was standardized to 1 U in 0.1 mL normal saline at a time. We evaluated the treatment effect by measuring the lesion size with serial laryngoscope evaluations.
RESULTS: The postinjection follow-up time varied from 3 to 23 months. Twenty-one patients (87.5%) experienced complete regression of the granuloma over 1-7 months (median 3 months). No major adverse effects were noted during the follow-up period.
CONCLUSION: For recalcitrant VPG, LEMG-guided low-dose BTA injection has the potential to be a safe, efficient, and effective treatment.