OSA Flashcards
1
Q
what is it
A
form of sleep disordered breathing that is characterised by upper airway collapse resulting in obstructive apnoeas and hypoapnoes with desaturation
2
Q
risk factors?
A
middle-aged men menopause obesity endocrine conditions trisomy 21 enlarged tonsils
3
Q
symptoms?
A
- Loud snoring
- Daytime sleepiness
- Unrefreshed sleep
- Restless sleep
- Morning headaches
- Nocturnal chocking
- Reduced libido
- Morning drunkenness
- Ankle swelling
4
Q
stages?
A
partial narrowing –>snoring
complete narrowing –> apnoea
critical narrowin –> hypo apnoea
5
Q
screening tools?
A
epworth sleepiness scale
STOP BANG tool
6
Q
investigations?
A
- overnight pulse oximetry - oximetry desaturation index
2. polysomnography
7
Q
what is the apnoea-hypoapnoea index (AHI)
A
number of episodes of apnoea or hypo apnoea per hour
8
Q
classification?
A
o AHI <5 normal
o AHI 5-15 mild OSA
o AHI 15-30 moderate OSA
o AHI >30 severe OSA
