Sleep-Wake Disorders Flashcards

1
Q

What is sedation?

A

reduces anxiety and evokes a calming effect/anxiolytic

-CNS depression

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2
Q

What is hypnotic?

A

evokes drowsiness and sleep maintenance

-higher degree of CNS depression than sedation

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3
Q

Explain dose-response curve?

A

Drug A: Barbiturates and alcohol, increase dose has additive effect
Drug B: Benzodiazepines, plateau’s

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4
Q

Explain absorption and distribution of sedative-hypnotic drugs? (3)

A
  • lipid soluble
  • good distribution to brain
  • absorb well from GI tract
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5
Q

What is metabolism and excretion of sedative hypnotic drugs?

A
  • active and inactive metabolites
  • metabolized before excretion
  • mainly by liver enzymes
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6
Q

What is tx for insomnia?

A

Benzodiazepines

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7
Q

Name the benzos for insomnia? (8)

A
Estazolam
Eszopiclone 
Flurazepam
Quazepam
Temazepam 
Triazolam 
Zaleplon
Zolpidem
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8
Q

T/F New nonbenzos Gaba agonist only have sedative effects?

A

True

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9
Q

What is MOA of benzondiazepines?

A

bind to benzo receptors in cerebral cortex, thalamus,
and limbic structures
-facilitate inhibitory action of GABA

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10
Q

What are clinical uses of benzos? (5)

A
insomnia
muscle relaxant
GAD
panic attacks 
seizures
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11
Q

What is 1/2 life of benzos?

A

2-4 hrs

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12
Q

Where are benzos metabolized?

A

liver

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13
Q

Which benzos do not have active metabolites? (3)

A

lorazepam
oxazepam
zolpidem

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14
Q

Which benzo is rapid onset and short duration?

A

Alpralozam

Triazolam

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15
Q

Which benzo has a long half life and and active metabolite?

A

Flurazepam

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16
Q

Which benzo is a prodrug?

A

Clorazepate

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17
Q

Which benzo is absorbed slowly?

A

Temazepam

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18
Q

What are ADE of benzos?

A
daytime sedation
tolerance 
cognitive impairment
anterograde amnesia  
rebound insomnia
anaphylaxis angioedema
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19
Q

name drug interactions with benzos?

A

alcohol
opiods
anti-psychotic
tricyclic anti depressant

20
Q

Which drug reverses the CNS depressive effects of benzos, eszopiclone, zolpidem, and zaplenon?

A

Flumazenil

21
Q

What is MOA of Flumazenil?

A

antagonist, binds benzo receptors

22
Q

What is PK of flumazenil?

A

short acting IV

23
Q

ADE of flumazenil?

A

agitation, confusion

24
Q

Name the three newer hypnotics, not benzos?

A
  • zolpidem
  • eszoplicone
  • zaleplon
25
Q

What is MOA of newer hypnotics?

A
  • more selective

- bind to GABA receptor isoforms BZ1 and W1

26
Q

What is MOA of barbituates?

A
  • bind at other sites on benzo receptor to facilitate action of GABA
  • not antagonized by flumazenil
  • blocks glutamate and sodium channels
27
Q

what are uses of barbs?

A

anesthesia

insomnia

28
Q

PK of barbs?

A

oral

liver metabolism

29
Q

toxicities of barbs?

A

tolerance and dependence

30
Q

what is tx for mild insomina?

A

anti-histamines

diphenyhydramine and doxylamine best

31
Q

what is tx for sleep maintenance insomnia?

A

anti-depressants

low dose doxepin

32
Q

If patient has abuse issues which med is given for sleep maintenance?

A

Trazadone

33
Q

what is MOA of surovexant?

A

orexin a and b antagonits

turns off wake signal

34
Q

what type of insomnia does surovexant tx?

A

helps with falling asleep and staying asleep

35
Q

What is MOA of Ramelton?

A

melatonin antagonist

36
Q

ADE of Ramelton?

A

dizziness, headaches, somnolence

37
Q

what does Ramelton tx?

A

sleep onset insomnia

helps in pt with COPD and sleep apnea

38
Q

Which herb has sedative-hypnotic properties?

A

Valerian root

39
Q

What are the four characteristics of Narcolepsy?

A
  1. EDS
  2. Cataplexy: sudden loss of bilateral muscle tone
  3. hallucinations
  4. sleep paralysis
40
Q

What is pathology in Narcolepsy?

A

dysfunction with hypocretin/orexin system

41
Q

What is used to tx excessive daytime sleepyness in Narcolepsy

A

modafinil ,armodafinil

42
Q

T/F Methylphenidate can cause dependence issues?

A

TRUE

43
Q

What is MOA for Cataplexy?

A

block re uptake of 5’HT and norepi at locus cerelus and raphe and supress REM sleep

44
Q

which meds are used to tx cataplexy

A

imipramine
fluoxetine
nortriptyline
clomipramine

45
Q

what is used to tx EDS and cataplexy?

A

Selegiline

46
Q

What is used to tx EDS, catalpexy, hallucinations?

A

Sodium oxybate

47
Q

What is MOA of sodium oxybate?

A

changes sleep architecture to resemble normal
potent not to be used by any other
increases slow wave sleep, decrease night timee awakenings and increases REM sleep