Lecture 13 Flashcards
Compare infant and adult vocal tract
shorter VT, lengthens by 4-6 months
vellum and epiglottis in close proximity until 4-6mo
infant vocal folds
no vocal ligament, undifferentiated LP, thick cover , w/ more vascularity
infant arytenoids
large until 4-6 mo
infant laryngeal position
high, descends at 2 years, and finally at 15
Hyoid and thyroid infant
contiguous til age 2- allows rapid transition from swallowing to breathing
Lamina propria infant
1 layer at both, development of 3 layers at puberty, complete at 16-17
Frequency and intensity perturbations infant (general)
more jitter and shimmer than adults due to a thicker cover and poorly differentiated lamina propria layers
infant fundamental frequency
high at infancy, 500 HZ, slowly lowers as child gets older
Respiratory differences in children
child take more frequent breath with greater rib cage excursion
Most common CONGENITAL pediatric disorder
Laryngomalacia
What is laryngomalcia?
sof laryngeal cartilages, may collapse into airway on inhalation
**MOST COMMON CAUSE OF INFANT INSPIRATORY STRIDOR
other common congenital pediatric disorders
laryngeal cleft
subglottic stenosis
most common ACQUIRED pediatric disorder
VF Nodules, 50% of all voice disorders
other common acquired bed disorders
vf paralysis
laryngopharyngeal reflux
Adults who have nodules as children….
have greater risk for voice problems as an adult
