CNS Stimulants Flashcards

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1
Q

what are sedatives

A

Drugs that have an inhibitory effect on the central nervous system (CNS) to the degree that they reduce:
Nervousness
Excitability
Irritability

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2
Q

what are hypnotics?

A

they can cause sleep
and are more potent than sedatives

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3
Q

can you give a hypnotic in large quantities and cause sedative effect

A

yes

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4
Q

what are the three classes of sedatives?

A

Barbiturates
Benzodiazepines
Miscellaneous drugs

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5
Q

what is sleep?

A

a normal and cyclical and repetitive cycle

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6
Q

True or false: benzodiazepines were used to be given as sedative-hypnotic dugs?

A

true

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7
Q

what can benzodiazepines be also classed as?

A

sedative-hypnotic or anxiolytic

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8
Q

what is a long acting benzodiazepine?

A

diazepam

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9
Q

what is an intermediate acting Benz.?

A

lorazepam

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10
Q

what is a short acting Benz.?

A

mdiazolam hcl

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11
Q

what are the effects of benzodiazepines?

A

calm the CNS, muscle skeletal relaxation, induce sleep

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12
Q

when should u use benzodiazepines?

A

sleep, sedation, skeletal muscle relaxation, agitation, anxiety related depression, acute seizure disorders, alcohol withdrawal, insomnia

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13
Q

what are some adverse effects of benzo.?

A

headache, drowsiness, reverse excitement, cognitive impairment, fall hazard, hangover effect

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14
Q

how can we categorize toxicity and overdose?

A

somnolence (sleepiness)
confusion
coma
diminished relfexes
rarely hypotension, or res depression (unless taken with CNS depressants)

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15
Q

what is a treatment for benzodiazepine overdose?

A

flumenazil

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16
Q

what are some interactions for benzodiazepines?

A

“zole” antifungals, verapamil, dilitiazem, protease inhibitor, grapefruit juice
Kava and valerian

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17
Q

what was the first clinically available benzodiazepine drug, and also to treat anxiety?

A

diazepam

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18
Q

what benzodiazepine is used for preoperatively and procedural sedation?

A

midazolam

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19
Q

what are some adverse effects of midazolam?

A

amnesia and anxiolysis, sedation
This drug is given mostly through IV and liquid oral dosage

20
Q

what is an intermediate acting benzodiazepine that induces sleep within 30-60 mins?

21
Q

when should patients take lorazepam if they need to sleep?

A

1 hour prior

22
Q

tell me about zopiclone? (3 points)

A

short acting Benz.
short half-life
used for insomnia, for 7-10 days

23
Q

what is kava?

A

promote sleep, relieve anxiety, stress, and restless
can cause yellowing, scaly skin, visual disturbances

24
Q

what are some interactions of kava?

A

alcohol, barbiturates, and psychoactive drugs

25
what are some contraindications for kava?
liver disease, alcoholism
26
what is an important teaching for patients taking kava?
not to operate heavy machinery
27
what is valerian?
used to receive anxiety, restless, and sleep. Can cause CNS depression, nausea, hepatoxicty, insomnia.
28
what are some interactions of valerian?
CNS depressants, MOA, phenytoin, warfarin, and alcohol
29
what are contraindications of valerian?
cardiac and liver disease
30
what should you teach patients taking valerian?
not to operate heavy machinery when using
31
why did we stop using barbiturates?
they cause a habit, and have low-therapeutic index
32
what are some indications for barbiturates?
sedatives, anticonvulsants
33
what is phenobarbital used for?
for coma
34
what are some treatments for overdose pf barbiturates?
symptomatic and supportive maintain adequate airway assisted ventilation or oxygen therapy fluids alkalization activated charcoal
35
what can give an additive effect when using barbitureates?
Alcohol, antihistamines, benzodiazepines, opioids, tranquilizers
36
what can give inhibited metabolism when taking barbiturates?
MAOIs prolong the effects of barbiturates
37
what can give increase metabolism when taking barbiturates?
Reduces anticoagulant response, leading to possible clot formation
38
what is a common barbiturates
phenobarbital
39
why do you use phenobarbital?
prevention of generalized tonic-clonic seizure, fever-induced convulsion
40
what are some over counter hypnotics
Doxylamine succinate (Unisom-2®), diphenhydramine hydrochloride (Sleep-Eze®), acetaminophen/diphenhydramine (Extra Strength Tylenol® Nighttime) – know names
41
when would you use muscle relaxants
Muscle spasms Management of spasticity of severe chronic disorders (multiple sclerosis, cerebral palsy) Work best when used along with physical therapy
42
what are some adverse effects of muscle relaxants
Euphoria Lightheadedness Dizziness Drowsiness Fatigue Confusion Muscle weakness, others
43
what are some common muscle relaxants
baclofen cyclobenzaprine hcl
44
when should you administer hypnotics to have an effective sleep
30-60 mins
45
when does round insomnia usually start after regimen
3-4 week
46