Related Experiment Videos
Electromyography and the immobile vocal fold.
Lucian Sulica1, Andrew Blitzer
1Center for the Voice, New York Eye and Ear Infirmary and Beth Israel Medical Center, New York, NY 10003, USA. lsulica@bethisraelby.org
Otolaryngologic Clinics of North America
|April 6, 2004
Summary
Laryngeal electromyography (EMG) aids otolaryngologists in diagnosing vocal fold immobility, distinguishing nerve damage from mechanical issues. This qualitative test guides workup and prognosis when interpreted with clinical judgment.
Area of Science:
- Otolaryngology
- Neurophysiology
Background:
- Laryngeal electromyography (EMG) has been a valuable tool for otolaryngologists for over 40 years.
- It helps differentiate mechanical limitations from denervation in immobile vocal folds.
Purpose of the Study:
- To review the clinical applications and diagnostic value of laryngeal EMG.
- To highlight its role in guiding the workup and prognosis of vocal fold paralysis.
Main Methods:
- Laryngeal EMG is presented as a qualitative diagnostic test.
- Interpretation relies on recognizing patterns of abnormalities over time within a clinical context.
Main Results:
- Laryngeal EMG can identify the site of a lesion in paralyzed vocal folds.
- It provides clinically relevant prognostic information when used judiciously.
Conclusions:
- Effective use of laryngeal EMG requires clinical judgment to avoid overreading due to potential errors.
- It has stimulated research in laryngeal neurophysiology and led to advanced electrodiagnostic techniques.