laryngeal electromyography

laryngeal electromyography

A technique analogous to conventional EMG used to differentiate neurogenic from myogenic disorders, localize a neurogenic lesion–ie, upper vs lower neurons, and differentiate organic from functional defects; LEMG is used to evaluate vocal fold dysfunction, tremor, myoclonus, pyramidal and extrapyramidal disorders, and primary muscular disorders, delineating specific disorders–eg, superior vs recurrent laryngeal nerve involvement, provide prognostic information. See Electromyography.
References in periodicals archive ?
One of their patients underwent laryngeal electromyography showing denervation of the cricothyroid muscle supplied by the superior laryngeal nerve, indicating a vagal neuropathy, supporting their hypothesis.
Vocal Cord Palsy as a Complication of Epidural Anaesthesia
Laryngeal electromyography demonstrated 25% decreased recruitment in the right cricothyroid and thyroarytenoid muscles.
Asymptomatic medial vocal fold hemorrhagic polyp
Objective measures such as acoustic analysis and laryngeal electromyography (EMG) can provide additional information and serve as a baseline for any future assessments that may be performed following thyroid surgery.
Thyroid disorders and their treatments: what singing teachers should know
These findings were confirmed by laryngeal electromyography, which revealed a 20% weakness of the left superior and recurrent laryngeal nerves.
Blood flow to a hemorrhagic vocal fold mass
1) Laryngeal electromyography must show increased muscle discharge of the thyroarytenoid or posterior cricoarytenoid muscles at the affected pitch(es).
Botulinum toxin injection for laryngeal dystonias in singers
Findings on laryngeal electromyography (EMG) can be useful in distinguishing between neural and mechanical causes of vocal fold immobility, although we have only level IV evidence to support its use.
Vocal fold immobility after finger sweep self-extrusion of impacted food in a choking victim with resolution following laryngeal mask ventilation
Laryngeal electromyography confirmed mild right superior laryngeal nerve paresis and MTD (poor relaxation at rest).
Bilateral true vocal fold atrophy
Laryngeal electromyography (LEMG) assesses the function of the nerves supplying the laryngeal musculature.
Autoimmune disorders of the larynx: Common conditions, symptoms, and treatments
Laryngeal electromyography revealed a 50% decrease in recruitment of the left recurrent laryngeal nerve (RLN) and a 70 to 80% decrease in the right RLN without significant synkinesis.
Complex posterior arytenoid dislocation
Once a movement disorder of the larynx is identified, laryngeal electromyography (LEMG) is ordered to help examine more accurately the integrity of the neuromotor (the nerve and muscle) system.
What to expect during a visit with a voice doctor. Part II: the examination
Laryngeal electromyography (LEMG) can confirm RLN compromise and determine the severity of injury.
Office assessment of vocal fold hypomobility
Differentiation between an arytenoid dislocation and nerve injury can be difficult in these instances, and diagnosis usually is made with the aid of laryngeal examination, laryngeal electromyography, and computed tomography scanning.
Consulting a voice doctor: when?
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