2021 Workshop Handout Bundle-EMG Laryngeal

EMG Laryngeal - Munin

Pdf Summary

This document is a summary of a workshop conducted by Dr. Michael C. Munin on the utility of Laryngeal Electromyography (LEMG). It discusses vocal fold immobility and the importance of understanding LEMG in clinical practice. The document explains the innervation of the larynx by the Vagus Nerve and the Superior Laryngeal Nerve (SLN). It also provides information on the Recurrent Laryngeal Nerve (RLN) and its role in laryngeal kinesiology. The document discusses conditions such as spasmodic adductor dysphonia and provides a list of differential diagnoses for laryngeal weakness. It goes on to explain LEMG localization rules for lesions in the larynx. The document describes the techniques for conducting LEMG on the Thyroarytenoid and Cricothyroid muscles. It also highlights the limitations of LEMG, including the inability to demonstrate conduction block and the discomfort it may cause. The document provides information on the information that can be obtained from LEMG, such as determining axon discontinuity, decreased motor unit recruitment, and electrical synkinesis. It also discusses the prognosis for recovery to the RLN based on LEMG findings. Finally, the document concludes with a consensus statement on using LEMG for the diagnosis and treatment of vocal cord paralysis.

Keywords

Laryngeal Electromyography

vocal fold immobility

clinical practice

Vagus Nerve

Superior Laryngeal Nerve

Recurrent Laryngeal Nerve

spasmodic adductor dysphonia

differential diagnoses

LEMG localization rules

Thyroarytenoid muscles