Objectives: This prospective study evaluated the effectiveness and safety of botulinum toxin injection for airway management in patients with transient bilateral vocal fold paresis (BVFP) after thyroidectomy.
Study Design: Prospective clinical study.
Methods: A prospective study was conducted at Soonchunhyang University, Bucheon, Korea, between March 2005 and February 2023. This study enrolled 12 patients with BVFP after thyroidectomy who received botulinum toxin injections into the thyroarytenoid muscles. Vocal fold mobility and airway distress were assessed using a flexible laryngoscope before and after injection.
Results: Of the 3018 thyroidectomy patients, 12 (0.39%) developed transient BVFP after surgery. Under the guidance of laryngeal electromyography, 3.6 ± 0.6 IU botulinum toxin was administered into the bilateral thyroarytenoid muscles. Notably, nine patients (75%) received a single injection, whereas three (25%) received an additional injection after 7days. The mean time for vocal fold movement recovery was 33.2 ± 17.2days after injection; conventional destructive procedures for BVFP were avoided in 10 of the 12 patients (83.3%).
Conclusions: Botulinum toxin injection offers a novel approach to airway management in patients with transient BVFP after thyroidectomy.
Level Of Evidence: Level 4.
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