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Flashcards in Sleep Disorders Deck (22):
1

actigraphy particularly usefulf or

confirming sleep quantity prior to MSLT

child or cognitively impaired

1

pathogenesis cheyne stokes

PCO2 climbs, sensory info from peripheral receptors don't reach heart fast enough because of heart failure

HF > still lungs > oversensitive sensors > breathe longer, deepr, overshoot needed > overcompensate and CO2 gets too low > cycle repeats

1

parasominias arising from REM sleep

nightmare

sleep paralysis

REM behavior disorder

2

impact of OSA on heart

hypoxic PA vasoconstriction

exagerated negative intrathoracic pressure

increased venous return

(LV underfilled > diastolic dysfunction)

3

sign of mixed sleep apnea

signs of effort before flow

4

impact of REM intrusion into wakefullness seen in narcolepsy

dreaming

paralysis - limbic discharge, halucination, feelings of psychosis

cataplexi

5

exagerated limb movements in sleep

sleep walking symptoms

REM behavior disorder

6

non-24hr-circadian-disorder

seen in retinally blind

sleep cycles advance day to day

7

allowable levels of REM in MSLT

1 or fewer

9

actigraphy reinforces/compliments

sleep diary

10

sleep diaries most helpful for

hypersomnia

10

pathologically sleep on MSLT if

<8min latency

 

12

cheyene stokes pattern

crescendo decrescendo respiration

13

determine if shallow breathing effort is obstruction driven vs centrally driven by

measuring intrathoracic pressure (larger change = obstructive event)

13

____ cell loss seen in narcolepsy with cataplexy

hypocretin cell loss

15

polysomnography indications

OSA

periodic limb movement disorder

16

actigraphy not useful for

insomnia (lying awake, still)

17

action of hypothalamus in sleep

Suprachiastmatic nucleus communicates time info to dorsomedial nucleus

>venterolateral preoptic nuclues > sleep promoting

>lateral hypothalamus > hypocretin neurons > wake promoting

18

worsening HF in central sleep apnea due to

driving up of sympathetic activiity

19

EEGfindings night terrors

 

associations

"tight" EEG activity

brief detla discharge preceding episode

arises from slowwave delta sleep

increased heart rate 

 

associated with fam hx of sleep walking

21

environmental factors in narcolepsy

antigen binding HLA DQB1*0602

head trauma, virus, toxins

sleep changes

22

causal factors in periodic limb movement disorder

 

sleep pattern

iron deficiency

nerve damage (low back injury)

diabetic neuropathy

restless leg syndrome

 

little delta sleep, little/no REM sleep