Sleep Flashcards
how many hours of sleep per night
6-9
physiologic functions reduced in
NREM
when does first REM cycle start
90 minutes
if REM cycle occurs in first 90 minutes of sleep
narcolepsy or depression
NREM increases after
exercise or starvation
stages of NREM
1-4 (light to deep)
how are stages of NREM judged
EEG (3 & 4 have delta waves)
when aroused from stages 3-4 of sleep
disorientation amnesia enuresis sleepwalking night terrors
high levels of brain activity and physiological activity similar to wakefulness
REM
poikilothermia
body temperature varies based on environment (shiver and sweats)
occur during NREM
when do erections happen
REM
skeletal muscle paralyzed or active in REM
paralyzed
when do dreams occur?
REM (abstract and surreal)
occurs in NREM (lucid and purposeful)
ratio of NREM to REM
3:1
how often does REM cycle
ever 90-100 minutes
how short does REM start?
10 minutes –> 40 minutes
how much REM does a neonate get?
50:50
lack of serotonin and melatonin results in
sleep reduction
elevated ____ & ____ cause decreased total sleep time
dopa and norepi
increased ____ decreases sleep time and increases REM proportion
acetylcholine
reduced levels of ______ decreases REM sleep
L-tryptophan
most common sleep complaint
insomnia
two forms of insomnia
primary
circadian rhythm disturbances
drugs for primary insomnia
Benzos
Z-Drugs
Melatonin
how long should you use meds to sleep
not usually more than 2 weeks
benzos effect
reduce time to onset of sleep, prolong stage 2 sleep, prolong total sleep time
benzos may decrease
relative REM sleep
benzos may help with underlying
anxiety
short acting benzo
triazolam (halcion)
onset for triazolam
2-3h
intermediate acting benzo
estazolam (prosom)
lorazepam (ativan)
temazepam (restoril)
long acting benzos
flurazepam (dalmane)
quazepam (doral)
Z-drugs affect which receptor
GABA (more selective so no muscle relaxant or anticonvulsant effect like benzos)
are z-drugs metabolized fast or slow
fast
4 Z-drugs
Zalepon (sonata)
Zolpidem (Ambien)
Zolpidem XR (Ambien CR)
Eszopiclone (Lunesta)
which Z drug has the shortest half life
Zalepon (Sonata)
which Z-drug is best for those who have trouble falling asleep
Zalepon
which 2 Z drugs shouldnt be used long-term
Zalepon and Zolpidem
persistent sleepiness or rebound insomnia not in
Zalepon
Z drug that comes in tablet, oral spray, and disolving tablet
ZOlpidem
developed to help improve sleep onset and can be used for maintenance
Zolpidem XR
longest half life of the Z drugs
Eszopiclone (lunesta)
alcohol potentiates effects of this Z drug
Eszopiclone (lunesta)
melatonin agonist
ramelteon (Rozerem)