Flashcards in Obstructive Sleep Apnoea Deck (9)
What is obstructive sleep apnoea?
Intermittent closure of the pharyngeal airway during sleep which causes significant daytime symptoms
Who is the typical patient with OSA?
What is the pathophysiology?
Upper airway muscles relax during sleep
OSA = excessive narrowing of pharynx
What can cause a small pharyngeal size?
Fatty infiltration of pharyngeal tissues
External pressure from increased neck fat
What is the effect of OSA?
Excessive daytime sleepiness
What is the Epworth sleepiness scale?
Used to assess daytime sleepiness
- 0 = would never doze
- 1 = slight chance
- 2 = moderate chance
- 3 = high chance
- sitting and reading
- watching TV
- sitting in public place
- passenger in car for an hoir
- lying down to rest in afternoon
- sitting and talking
- sitting after lunch with no alcohol
- in car while stopped in traffic
0-5 Lower Normal Daytime Sleepiness
6-10 Higher Normal Daytime Sleepiness
11-12 Mild Excessive Daytime Sleepiness
13-15 Moderate Excessive Daytime Sleepiness
16-24 Severe Excessive Daytime Sleepiness
How is OSA diagnosed?
- overnight oximetry
- body movements
How is OSA managed?
Mandibular advancement devices