Nonrecurrent Laryngeal Nerve: Precise Detection by Electrophysiological Nerve Monitoring

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dc.contributor.authorGürleyik, Günay
dc.contributor.authorTorun, Mehmet
dc.contributor.authorGürleyik, Emin
dc.date.accessioned2020-04-30T23:19:41Z
dc.date.available2020-04-30T23:19:41Z
dc.date.issued2018
dc.departmentDÜ, Tıp Fakültesi, Cerrahi Tıp Bilimleri Bölümüen_US
dc.descriptionWOS: 000450940700109en_US
dc.descriptionPubMed: 30042921en_US
dc.description.abstractComplication-free thyroid surgery is mainly based on the motor integrity of the recurrent laryngeal nerve (RLN). The nonrecurrent laryngeal nerve (non-RLN) is a rare anatomical variation that may increase the risk of vocal cord palsy. Early identification and exposure of the non-RLN may minimize injury risk. This case report presents functional detection of the nonRLN by intraoperative neuromonitoring (IONM). Total thyroidectomy was performed under the guidance of IONM on a patient with bulky multinodular goiter. The first step of IONM is pre-dissection stimulation (V1) of the right vagus nerve (VN). VI at a standard distal point was negative as indicated by the absence of both a sound signal and wave amplitude. The right VN was then followed proximally and dissected under the guidance of IONM. This dissection established a proximal point creating a positive signal that led us to determine the separation point of the non-RLN. The right non-RLN arising from the proximal VN was identified and fully exposed until laryngeal entry. Its motor integrity was confirmed with post-dissection signals. The left RLN was identified at the usual anatomical position that was fully exposed and preserved during thyroid surgery. Total thyroidectomy was then accomplished without complication. The postoperative period was uneventful. Postoperative laryngoscopy confirmed normal vocal cord function. The non-RLN is accurately identified by IONM during the early part of the thyroid surgery. The absence of a distal VN signal is predictive of the non-RLN. IONM-guided proximal dissection of the right VN leads to the identification of the non-RLN. The prediction of the non-RLN by the absence of a VN signal during an early stage of surgery may prevent or minimize the risk of nerve injury.en_US
dc.identifier.doi10.7759/cureus.2670en_US
dc.identifier.issn2168-8184
dc.identifier.issue5en_US
dc.identifier.urihttps://doi.org/10.7759/cureus.2670
dc.identifier.urihttps://hdl.handle.net/20.500.12684/3826
dc.identifier.volume10en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherCureus Incen_US
dc.relation.ispartofCureusen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectthyroiden_US
dc.subjectsurgeryen_US
dc.subjectvagus nerve stimulationen_US
dc.subjectanatomical variationen_US
dc.subjectv1 signalen_US
dc.titleNonrecurrent Laryngeal Nerve: Precise Detection by Electrophysiological Nerve Monitoringen_US
dc.typeArticleen_US

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