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Background Injection laryngoplasty is a surgical procedure used in management of glottal insufficiency. The objective of this study was to assess respiratory and voice outcomes of office-based injection laryngoplasty in patients with unilateral vocal fold paralysis (UVFP). Ten patients underwent office-based injection via transcutaneous approach using Radiesse or hyaluronic acid. Auditory perceptual assessment (APA), voice handicap index (VHI), size of the glottic gap, acoustic parameters (jitter, shimmer, and harmonic to noise ratio), maximum phonation time (MPT), stroboscopic evaluation, pulmonary function tests (PFTs), and videofluoroscopic evaluation of swallowing were done pre-injection, 1 week and 3 months post-injection. Results Subjective and objective voice outcomes, in addition to laryngostroboscopic parameters improved after injection. Non-significant difference was found between pre- and post-injection results of the PFTs. Conclusions Office-based injection laryngoplasty is a safe and effective method for treating UVFP. Patients with glottic gap (&lt; 1–3 mm) are perfect candidates for such procedure. Injection laryngoplasty improves patients’ voice quality and does not impair respiration.

Respiratory and voice outcomes of office-based injection laryngoplasty in patients with unilateral vocal fold paralysis