111214 sleep disorders

Question 1

what is polysomnography useful for?

Answer 1

obstructive sleep apnea and periodic limb disorder

Question 2

obstructive apnea pattern

Answer 2

no airflow

there’s respiratory effort

Question 3

mixed apnea pattern

Answer 3

there’s effort before flow

Question 4

central apnea pattern

Answer 4

lack of flow is associated with lack of effort

Question 5

what can you learn from a sleep study?

Answer 5

sleep disordered breathing
movement disorders
parasomnias (transition from awake to sleep or vice versa)

research related applications

Question 6

actigraphy

Answer 6

motion detector
reinforces/compliments sleep diary
objective

Question 7

MSLT

Answer 7

multiple sleep latency test
objective measure of sleepiness
20 minute opportunities to nap every 2 hours for 5 sessions in a row

unit of measure is minutes from lights out to sleep onset

normal is greater than 10 minutes

Question 8

what is considered abnormal for the MSLT?

Answer 8

under 8 minutes is considered pathologically sleepy

REM sleep during more than one of the naps is abnormal