Intraoperative electrophysiologic monitoring of the recurrent laryngeal nerve

Research output: Contribution to journalArticle

Abstract

Intraoperative electrophysiologic monitoring of the recurrent laryngeal nerve was performed with a commercially available device consisting of an endotracheal tube with integrated stainless-steel-wire surface EMG electrodes positioned at the level of the true vocal cords. Forty-two recurrent laryngeal nerves were successfully monitored with this system in 31 patients undergoing thyroidectomy or parathyroidectomy. In all cases, evoked EMG responses were elicited by direct electrical recurrent laryngeal nerve stimulation. Stimulus thresholds for evoked responses ranged from 0.2 to 0.6 mA (mean 0.3 mA) for the 37 nerves with preoperative ipsilateral normal vocal cord mobility. Mechanically evoked potentials with acoustic signals were also detected during the surgical procedures related to recurrent laryngeal nerve manipulation. It may be concluded that surface electrode monitoring of the recurrent laryngeal nerve with this system provides a simplified, noninvasive technique that is as sensitive as monitoring with intramuscular laryngeal electrodes.

Original languageEnglish (US)
Pages (from-to)443-449
Number of pages7
JournalLaryngoscope
Volume106
Issue number4
DOIs
StatePublished - Apr 1996

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Intraoperative Monitoring
Recurrent Laryngeal Nerve
Electrodes
Vocal Cords
Parathyroidectomy
Stainless Steel
Thyroidectomy
Evoked Potentials
Acoustics
Equipment and Supplies

ASJC Scopus subject areas

  • Otorhinolaryngology

Cite this

Intraoperative electrophysiologic monitoring of the recurrent laryngeal nerve. / Eisele, David W.

In: Laryngoscope, Vol. 106, No. 4, 04.1996, p. 443-449.

Research output: Contribution to journalArticle

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