Chapter 57 : Neurologic Evaluation of Larynx Flashcards
What is the most important function of the larynx?
Airway protection
It is defined as the production of sound.
Phonation
It is defined as the modification of phonation to produce voice.
Resonance
It is the shaping of voice into words by actions of the lips, tongue, palate, pharynx, larynx.
Articulation
What is the characteristic sign in the tongue of patients with ALS indicating fasciculations?
“Bag of worms” appearance
In what condition can you observe a spasmodic motion of jaw and tongue thrusting?
Oromandibular dystonia
Rapid repetition of the syllable ___ tests for lip function.
/pa/
Syllable ___ tests for the function of the tip of the tongue.
/ta/
Syllable ___ tests for the function of the posterior tongue.
/ga/
What do you call the computational method of simplifying complex waveforms into component parts?
Fournier analysis
Normal maximum phonation time for females
15 to 25 seconds
Normal maximum phonation time for females
25 to 35 seconds
What syllable can be said in repetition to measure the intraoral pressure as estimate for phonatory subglottic pressure?
/pi/
It is the test that measures the light transmission overlying the subglottic neck skin to estimate the light passing through the glottis which is proportional to the size of the glottic opening.
Photoglottography
What muscle is commonly tested in Laryngeal EMG?
Thyroarytenoid
What are 2 EMG findings that indicate denervation?
Fibrillation potentials and Positive sharp waves
When do you expect fibrillation potentials and positive sharp waves to appear when the RLN is severely injured?
3 weeks
What is the EMG finding in essential tremor?
Regular 4- to 8- Hz repetitive signal
Polyphasic action potentials are discoordinated nerve signals that indicate __________.
Reinnervation
This test uses a modified barium swallowing to directly visualize the oral, pharyngeal, and upper esophageal phases of swallowing.
Cineradiography
What do you call the normal reaction of the vocal cords when a puff of air is delivered to the supraglottic mucosa during a FEESST?
Laryngeal adductor reflex
At what pressure in mm Hg should the laryngeal adductor reflex (LAR) be elicited in a patient with normal laryngeal sensation?
3 mm Hg
Lack of laryngeal adductor reflex at ___ mm Hg puff of air indicates severe nerve impairment.
9 mm Hg
