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.
demonstrated 25% decreased recruitment in the right cricothyroid and thyroarytenoid muscles.
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.
These findings were confirmed by laryngeal electromyography
, which revealed a 20% weakness of the left superior and recurrent laryngeal nerves.
1) Laryngeal electromyography
must show increased muscle discharge of the thyroarytenoid or posterior cricoarytenoid muscles at the affected pitch(es).
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.
confirmed mild right superior laryngeal nerve paresis and MTD (poor relaxation at rest).
(LEMG) assesses the function of the nerves supplying the laryngeal musculature.
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.
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.
(LEMG) can confirm RLN compromise and determine the severity of injury.
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.