ArticleIndian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India2025
Incidence of Injury to External Branch of Superior Laryngeal Nerve as Diagnosed by Acoustic Voice Analysis After Thyroidectomy.
Article in Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- SHAP-Based Identification of Potential Acoustic Biomarkers in Patients with Post-Thyroidectomy Voice Disorder.Diagnostics (Basel, Switzerland) · 2025Article
- The Sensory Gatekeeper of the Larynx: Anatomy and Clinical Importance of the Internal Branch of the Superior Laryngeal Nerve.Diagnostics (Basel, Switzerland) · 2025Review
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7 authors.
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Abstract
Voice related complications are a major cause of morbidity in patients undergoing thyroidectomy in the postoperative period in the modern world. EBSLN being a primary tensor of vocal cords via cricothyroid muscle is important to produce high pitched sound above 150 Hz and it is essential for professional voice users. This nerve is prone to injury during surgery because of its proximity to the upper pole of the thyroid and complex anatomical relationship with the superior thyroid vessels. We aimed to study the occurrence of injury to EBSLN during surgery via acoustic voice analysis and comparing it with the pre-operative values. Patients of benign thyroid swelling with Bethesda type I to III and normal thyroid function tests were taken up for surgery. Pre- and post-operatively acoustic voice analysis was done in a soundproof room. Fundamental frequency (F0), amplitude perturbation (shimmer), fundamental frequency perturbation (jitter), and harmonic/noise ratio (HNR) were calculated and analysed. Intraoperatively, EBSLN was identified in Joll's triangle and preserved. The acoustic voice analysis was performed on the postoperative day one and seven, and compared with the pre-operative values. The mean age of patients was 35.73 ± 9.13 years. Most common age group 36-45 with male to female ratio being 1:9. Cystic colloid goitre was seen in 85% patients. F0 decreased from the preoperative value (221.447 ± 45.981 Hz) on postoperative day one (217.283 ± 46.323 Hz), p-value < 0.01 and on day 7, F0 (219.872 ± 45.096 Hz)
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