Laryngology, Salivary glands, Endocrine Flashcards
Only vocal abductor and nerve
Posterior Cricoarytenoid, inervated by reccurent laryngeal nerve)
Plays biggest role in changing pitch of voice
Cricothyroid, (vocal adductor) innervated by superior laryngeal nerve
Where do most malignancies occur in the vocal fold layers?
Squamous epithelium
How mich can 1mm of edema in the air reduce the airway?
60%
Forced air across a constricted zone causes negative pressure and causes the vocal cords to close again
Bernoulli’s effect
Production of speech
Phonation
Oral/nasal speech balance
Resonation
Use of lips, teeth, tongue to produce speech sounds
Articulation
Source of speech energy
Respiration
Syllable stress, emphasis, inflection
Prosody
Most common test to evaluate speech
Videostroboscopy
Why do some pt’s “moan” or “pursed lips” breath?
Auto-PEPing
Where is the source of snoring?
Nasopharynx
Where is the source of gurgling sounds?
Oropharynx
Source of inspiratory stidor
Supraglottic
Source of inspiratory or biphasic stridor, hoarseness
Glottic
Source of barking cough
Subglottic
Expiratory stridor
Tracheobrachial
Indications for endoscopy
SPECS-R: severity of obstruction, progression of SOB, eating difficulties, cyanosis, sleep apnea, radiologic findings
Indications for tracheotomies
Bypass upper airway obstruction, prolonged intubation, pulmonary toilet, protect from aspiration, eliminate dead space with CNS depression
Trach Care
New trach = 3-5 days before making trach changes, change INNER cannula every shift/every day, HUMIDITY, minimal amount of cuff pressure to decrease scarring, infections, erosions
Most common congential laryngeal abnormality
Laryngomalacia
Most common cause of stridoe in neonate and chronic peds
laryngomalacia
S&S of laryngomalacia
Intermittent inspiratory stridor, worses with crying or feeding, has a floppy epiglottis that collapses inwards (Monitor)
Trachea collapsing from immature tracheal cartilage
Tracheomalacia
Most common vascular anomaly to cause stridor
Double aortic arch
Most common vascular anomaly to compress the digestive tract
Retroeosophageal right subclavian artery
High pitched stridor, mental retardation, microcephaly, narrowed endolarynx and interarytenoid cleft
Cri Du Chat, deletion of short arm of chromosome 5
Dysphagia, drooling, dyspnea in >1y/o
Epiglottitis, is true emergency, cuased by H. Flu
Dx epiglottitis
Thumb sign on lateral XR
Barky cough, inspiratory or biphasic stidor, NO drooling or dysphagia
Croup, caused by parainfluenza 1 virus
Dx of croup
Steeple sign with narrowed subglottis
Second most common cause of hoarseness in children
Recurrent respiratory papillomatosis, HPV 6 and 11
Most common head and neck neoplasm in children
Hemangioma
Tx for hemangioma
usually goes away, can give beta blockers
Sacoidosis: effect on larynx
Most commonly epiglottis