sleep related breathing disorders Flashcards
what is a hypnogram
a recording of the sleep cycle
what is the most common sleep disorder?
insomnia
when we sleep, the tidal volume____
decr
Normal sleeping: incr paCO2 by ___; decr in PaO2 by ____
Normal sleeping: incr paCO2 by 2-4, decr in PaO2 by 3-9
dynamic upper airway narrowing or closure during sleep
obstructive sleep apnea
triad of sx seen in obstructive sleep apnea
- loud snoring
- oxygen desaturations
- frequent arousals
who to screen for OSA?
- dissatisfied w/ sleep
2. daytime sleepiness
what is the berlin questionnaire?
used in primary care setting to assess risk
what is the STOP BANG screenign test?
used in preoperative setting
Most common reason for OSA in children
prominent tonsils
what to use to determine how sleep a patient is
epworth sleepiness scale
what is the gold standard for OSA evaluation?
polysomnography
decrease in airflow by 30% + drop in pulse ox by 4%
hypopnea
what is the AHI
apnea hypopnea index
what is AHI used for?
apneas & hypopneas per hr of sleep
what is the tx of choice for sleep apnea?
CPAP
what else can CPAP reduce other than sleep apnea
HTN
recurrent cessation of respitation during sleep without associated ventilatory effort
central sleep apnea
cheyne stokes breathing pattern is seen w/?
central sleep apnea
which type of sleep apnea is linked to overuse of narcotics?
CSA
what is the obesity hypoventilation syndrome?
pickwickian syndrome (secondary sleep related hypoventilation syndrome)
