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KMID : 1202020140070020153
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Journal of Korean Thyroid Association
2014 Volume.7 No. 2 p.153 ~ p.158
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How to Preserve Laryngeal Nerve for PreventingPost-Thyroidectomy Voice Change
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Kim Ji-Won
Choi Seung-Ho
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Abstract
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After thyroid surgery, voice change occurs very frequently, in more than 30% of cases. In addition to injuryto the recurrent laryngeal nerve (RLN) or the external branch of superior laryngeal nerve (EBSLN), vocal foldedema due to excessive tracheal traction or disrupted laryngeal venous drainage, and laryngotracheal fixationfollowing injury to extralaryngeal musculature can cause post-thyroidectomy voice change. Although completerecovery can be expected mostly in 3 months, dysphonic patients should be evaluated pre and postoperativelyby laryngoscopy or laryngeal stroboscopy. The present review discusses the evaluation of voice change, theanatomy of RLN and EBSLN and common cause of voice change after thyroid surgery. Furthermore, werepresent how to preserve RLN, SLN including intraoperative nerve monitoring.
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KEYWORD
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Thyroidectomy, Recurrent laryngeal nerve, External branch of superior laryngeal nerve
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