Obstructive Sleep Apnoea Flashcards Preview

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Flashcards in Obstructive Sleep Apnoea Deck (9)
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1

What is obstructive sleep apnoea?

Intermittent closure of the pharyngeal airway during sleep which causes significant daytime symptoms

2

Who is the typical patient with OSA?

Male
Obese

3

What is the pathophysiology?

Upper airway muscles relax during sleep

OSA = excessive narrowing of pharynx

4

What can cause a small pharyngeal size?

Fatty infiltration of pharyngeal tissues
External pressure from increased neck fat
Large tonsils
Craniofacial abnormalities

5

What is the effect of OSA?

Snoring
Interrupted sleep
Excessive daytime sleepiness
Nocturia
GORD

6

What is the Epworth sleepiness scale?

Used to assess daytime sleepiness

Scores
- 0 = would never doze
- 1 = slight chance
- 2 = moderate chance
- 3 = high chance

Scenarios
- 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

7

How is OSA diagnosed?

Sleep studies
- overnight oximetry
- snoring
- body movements
- HR

8

How is OSA managed?

Weight loss
Mandibular advancement devices
Nasal CPAP

9

What is the driving advice for OSA?

Do not drive while sleeping

Alert DVLA of diagnosis