목적: To assess voice outcomes using the novel technique of in-office laryngeal electromyography-guided vocal fold injections (LEVFI) with hyaluronic acid to treat glottal insufficiency. Secondary objectives included determining the complication/completion rates and if any factors were associated with improved voice outcomes. 방법:Retrospective review of patients who received LEVFI at a tertiary academic voice centre. Three and six-month voice outcomes were assessed. Outcomes included voice handicap index-10 (VHI-10), maximum phonation time (MPT), perceptual analysis of voice (GRBAS), fundamental frequency, and stroboscopy. 결과:Results: There were 121 eligible patients (55.4% male, age 63.7 years). VHI-10 significantly improved from 25.7 +/- 7.5 to 20.9 +/- 10.9 at 3 months (P < .001) and 19.1 +/- 11.5 at 6 months (P < .001). MPT improved from 6.2 +/- 5.4 seconds to 9.4 +/- 7.1 seconds at 3 months (P < .001) and 11.3 +/- 8.2 seconds at 6 months (P < .001). GRBAS improved in 74.8% of patients ((65.2, 82.8) 95% CI) at 3 months and 80.8% ((69.9, 89.1) 95% CI) at 6 months. Stroboscopy showed a glottic gap improvement in 74.8% of patients ((65.8, 82.4) 95% CI) at 3 months and 80.3% ((65.9, 88.5) 95% CI) at 6 months. Fundamental frequency was unchanged, as expected. Multivariate analysis reported that no factors were associated with better voice outcomes. Overall, 177/181 (97.8%) injections were completed with no significnat complications. 결론:Conclusion: LEVFI is an effective, novel technique to treat glottic insufficiency with improved voice outcomes, high completion rate, and no significant complications