Low-Dose LEMG-Guided Botulinum Toxin Type A Injection for Intractable Vocal Process Granulomas.

Journal of voice : official journal of the Voice Foundation 2022 Vol.36(2) p. 277-282

Ho CF, Lee YC, Hsin LJ, Lee LA, Li HY, Fang TJ

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Abstract

[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.

추출된 의학 개체 (NER)

유형영어 표현한국어 / 풀이UMLS CUI출처등장
시술 botulinum toxin 보툴리눔독소 주사 dict 2

MeSH Terms

Botulinum Toxins, Type A; Electromyography; Granuloma; Humans; Laryngeal Muscles; Laryngoscopes; Vocal Cords

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