Laryngeal Evoked Electromyography with a Noninvasive Technique

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J Korean Soc Laryngol Phoniatr Logop > Volume 10(1); 1999 > Article

Journal of The Korean Society of Laryngology, Phoniatrics and Logopedics 1999;10(1): 30-36.

비침습적 방법에 의한 후두유발근전도 검사

정성민¹, 조선희², 박기덕³

¹이화여자대학교 의과대학 이비인후과학교실²이화여자대학교 의과대학 생리학교실³이화여자대학교 의과대학 신경과학교실

Laryngeal Evoked Electromyography with a Noninvasive Technique

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ABSTRACT

Background and Objectives
: Laryngeal Evoked Electromyography(EEMG) is a objective, quantitative technique to determine innervation status of larynx. The possible applications of this technique are to confirm the etiology of impaired vocal fold motion and monitor perioperative vagus nerve trauma. The purpose of this study is to develop a novel method for determining the amount of reinnervation of recurrent laryngeal nerve with accurate, inexpensive, and minimally invasive technique in human.
Materials and Method
s : Laryngeal EEMG was performed for 16 adults with intact vocal folds motion and 2 patients diagnosed as unilateral vocal fold paralysis. for the purpose of searching what is the optimal and noninvasive technique for laryngeal EEMG, we used 2 types of stimulation configurations(transcutaneous vs percutaneous) and 2 types of recording configurations(intramuscular vs. surface).
Results
and
Conclusion
s : Percutaneous needle stimulation and surface recording of laryngeal EEMG was reliable and comparable to standard needle stimulation and invasive intramuscular needle recording. But the laryngeal EEMG by the surface recording and transcutaneous surface stimulation was not reliable and repeatable. Therefore we recommended that laryngeal EEMG by surface recording and percutaneous needle stimulation would be minimally invasive, reliable technique to know the status of reinnervation in e patients with vocal fold paralysis.

KEY WORDS： Laryngeal evoked electromyography;