55 VISUALIZATION OF LARYNX

Question 1

Thick mucus causes

Answer 1

Lack of hydration

Chronic irritation from mechanical trauma, smoking, LPR

Question 2

Mucus pooling indicates:

Answer 2

Poor laryngeal sensation
Weak lateral pharyngeal walls
Inefficient swallowing

Question 3

Basic movement patterns of vocal fold vibration

Answer 3

Lateral displacement and return to midline

Timing difference between superior and inferior portions of the vocal folds (vertical phase difference)

Question 4

Videostroboscopy clinical utility:

Answer 4

Characterizing stiffness, scar, submucosal injury
Detecting small vocal fold lesions
Identifying asymmetric mass or tension
Monitoring tissue healing after phonosurgery

Question 5

Types or closure patterns:

Answer 5

Complete closure
Anterior glottal gap
Posterior
Spindle - shaped
Hourglass - shaped

Question 6

Most common closure pattern
Men:
Women:

Answer 6

Men: complete closure
Women: posterior glottal gap

Question 7

Closure pattern: normal variants in men of any age and ______(age group, sex)

Answer 7

Anterior
Spindle - shaped

Older women

Question 8

Hourglass shaped gaps seen in which conditions?

Answer 8

Vocal nodules
Cyst, polyp
Contralateral reactive lesion

Question 9

Def’n - amplitude of vibration

Answer 9

Horizontal excursion from midline

Question 10

Def’n closure pattern

Answer 10

Degree and pattern of vocal fold contact at most closed instant of vibratory cycle

Question 11

Causes of offplane closure

Answer 11

Laryngeal trauma
Neuromuscular difference between folds
Surgery

Question 12

Excursion of approximately ______ the ______ of the fold us considered normal.

Answer 12

1/3, width

Question 13

Def’n mucosal wave

Answer 13

Vertical upheaval of vocal fold cover over the vocal fold body

Question 14

Def’n symmetry

Answer 14

Phase symmetry - how vocal folds mirror each other during vibration

Question 15

Definition of Regularity

Answer 15

Degree to which one phonatory cycle is similar to another in amplitude and time

Question 16

Properties assessed during stroboscopy:

7

Answer 16

Glottal closure
Regularity
Mucosal pliability
- amplitude of vibration
- mucosal wave
Vertical closure level
Phase closure
Phase symmertry