Neurology class 3 Flashcards

1
Q

psychological dependence

A

caused by decreased activity in the ventromedial prefrontal cortex which leads to decreased impulse control

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2
Q

opioids, ketamine, PCP, mushrooms, DMT, benzodiazepines

A

‘downers’

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3
Q

cannabinoids, alcohol, nicotine

A

‘mixed’

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4
Q

CNS stimulants, psychoactive stimulants

A

‘uppers’

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5
Q

altered mood, relaxation (euphoria), uninhibited behaviour

A

desired effect of downers

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6
Q

modulate serotonin, increase dopamine, inhibit substance P, decrease glutamate, inhibit ion channel transport

A

dynamics of downers

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7
Q

opioid dynamics

A

inhibition of substance P produces analgesia and the more drug there is the more dopamine (reward pathway) is released
- decreased neuronal excitation which causes CNS depression

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8
Q

most potent opioid

A

fentanyl

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9
Q

least potent opioid

A

codeine

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10
Q

what to monitor for patients on opioids

A
  • orthostatic hypotension due to peripheral vasodilation
  • itching due to mast cell stimulation and histamine release
  • nausea due to substance P binding
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11
Q

fentanyl

A

‘downer’
extremely potent and commonly laced into other drugs

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12
Q

Heroin

A

‘downer’
highly lipophilic and crosses the BBB quickly
- commonly combined with fentanyl and if so then it is poison

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13
Q

ketamine

A

dissociative anesthetic; ‘downer’
- potent, high sedation, causes amnesia, and respiratory depression
- known as date rape drug

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14
Q

PCP

A

derivative of ketamine; ‘downer’
- originally developed for anesthesia
- goes from excitation to sedation but depends on dosage

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15
Q

mushrooms

A

hallucinogenic; ‘downer’; increases GABA and decreases glutamate
- low potency and low addiction

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16
Q

DMT (dimenthyltryptamine)

A

‘downer’

17
Q

altered mood, relaxation, un-inhibition of behaviour

A

desired effects of mixed drugs

18
Q

addiction

A

negative neuroplasticity in the brain

19
Q

vape

A
  • safety testing based on ingestion not inhalation
  • aerosols more toxic when heated
  • formaldehyde, glycidol, acetol
20
Q

nabilone, dronabinol

A

cannabinoids

21
Q

CB1

A

target CNS

22
Q

CB2

A

target PNS

23
Q
  • modulate serotonin which deals with mood alterations
  • increased anandamide which results in memory loss
  • stimulate dopamine release
A

CB1 and CB2 receptors

24
Q

competition of these cannabinoids at receptors to create a balance

A

CBD and THC

25
Q

antagonizes adrenergic NS producing a “calming” effect

A

high CBD

26
Q

modulates adrenergic NS producing alertness, focus, and agitation along with VS changes and hallucinations

A

high THC

27
Q

binds nicotinic receptors (cholinomimetic and adrenergic)
- vasoconstriction, decreased GI motility
- stimulates dopamine release
- lipophilic
- oxidizes lipoproteins causing plaque formation in atherosclerosis

A

nicotine

28
Q

increase in Ach and serotonin –> stimulation of dopamine –> increase in GABA –> decrease in glutamate

A

effects of alcohol (in order)

29
Q
  • absorbed via gastric mucosa
  • crosses BBB
  • hepatic metabolism (uses vitamin B)
  • zero order kinetics
  • withdrawal syndrome ‘delirium Tremens’
A

alcohol

30
Q

metadoxine

A

accelerates the removal or clearance of alcohol by enhancing metabolism to inactive metabolites

31
Q

altered mood, excitation (euphoria), uninhibited behaviour
- increases norepi, serotonin, dopamine

A

‘uppers’ abuse desired effect

32
Q

hallucinogenic, psychedelic, altered reality, visual alterations

A

stimulant abuse desired effect

33
Q

sympathomimetics, amphetamines

A

stimulants

34
Q

cocaine, crystal meth

A

stimulants

35
Q

cocaethylene

A

cocaine and alcohol

36
Q

amphetamine-type, hallucinogenics

A

psychoactive stimulants

37
Q

LSD (acid), ecstasy (MDMA)

A

psychoactive stimulants