Antidepressants Flashcards

1
Q

3 neurotransmitters implicated in depression

A

Serotonin
Dopamine
Noradrenaline/ Norepinephrine

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2
Q

S&S of Depression

A

Persistent low mood
loss of pleasure in usual activities
fatigue
changes in sleep habits
difficulty in concentration

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3
Q

Aetiology (cause) of depression

A

stressful events
physical illness
genetics
social isolation
trauma

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4
Q

what antidepressants do

A

bring neurotransmitters (serotonin, dopamine and noradrenaline) normal level in the body

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5
Q

how long antidepressants benefits can be observed and what are noticeable changes

A

up to 8 weeks
improvement in sleep, appetite and motivation

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6
Q

neurotransmitter found in the brain made by amino acid trytophan. Contributes to feeling of wellbeing and happiness

This is also 90% found in the GI tract, increases gastric and colonic motility, nausea, vasoconstriction and platelet aggregation

A

Serotonin

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7
Q

5- hydroxytryptamine (5-HT) is a monoamine neurotransmitter also called as

A

Serotonin

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8
Q

Monoamine oxidase (MAO) enzyme catalyses or breakdown which neurotransmitters?

A

Serotonin (5-HT)
Dopamine
Noradrenaline

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9
Q

4 classes of Antidepressant drugs

A

SSRI/ Selective Serotonin Reuptake Inhibitors
SNRI/ Serotonin and Noradrenaline Reuptake Inhibitors
Tricyclic Antidepressants (TCA)
Monoamine oxidase inhibitor (MAOI)

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10
Q

Pharmacodynamics of SSRI and SNRI

A

Inhibit reuptake pumps for serotonin and noradrenaline

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11
Q

Temporary or transitory adverse effects of SSRIs and SNRIs

A

Dizziness, confusion, disorientation, increased anxiety
Nausea
Sleepiness
Suicidal thoughts (young people)

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12
Q

Long term adverse effects of SSRIs and SNRIs

A

Tremor
Sexual dysfunction
Sweating
Hyponatraemia
Weight loss or gain
HTN and Tachy (SNRI)

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13
Q

Pharmacodynamics of TCA (Tricyclic Antidepressants)

A

Serotonin and noradrenaline reuptake inhibitors
Histamine (inflammatory mediator for allergic reactions) and acetycholine (parasympathetic neurotransmitter) antigonist
Na and Ca channels inhibitors

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14
Q

First line drug of depression and anxiety

A

SSRI (Selective Serotonin reuptake inhibitors)

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15
Q

Major side effect of SSRI overdose

A

Serotonin Syndrome

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16
Q

SSRI meds

A

Citalopram
Escitalopram

Setraline

Fluoxetine

Vilazodone

17
Q

Inhibits serotonin reuptake = increasing serotonin levels

A

SSRI

18
Q

Inhibits serotonin and noradrenaline or dopamine and noradrenaline reuptake

A

SNRI/ DNRI

19
Q

do not mix ________ with MAOIs or TCAs

A

SNRI and DNRI

20
Q

SNRI/ DNRI meds

A

Bupropion (used for smoking cessation)

Duloxetine

Venlafaxine

Milnacipran

Nefazodone

21
Q

Adverse effects of TCAs

A

Tremors
Cardio: Arrythmias, postural hypotension
Anticholinergics: dry mouth, dysphagia, constipation, urinary retention, palpitations
Sedation and seizures

22
Q

TCA meds

A

Amitriptyline
Nortriptyline

Doxepine

Clomipramine

23
Q

Blocks monoamine oxidase causing an increase in adrenaline, noradrenaline, dopamine and serotonin or increase in CNS stimulation

A

MAOI (Monoamine oxidase inhibitor)

24
Q

Adverse effects of MAOIs

A

Orthostatic hypotension (encourage pt to rise slowly)
Dizziness
Blurred vission

Constipation
Dry mouth
N&V

HTN crisis

25
Q

Foods to avoid while taking MAOIs

A

aged cheese
fermented meats
chocolate
caffeinated beverages
sour and cream yoghurt

26
Q

MAOI meds

A

Phenelzine

Tranylcypromine

Isocarboxazid

27
Q

Excess noradrenaline causes

A

anxiety
aggression
HTN

28
Q

deficient noradrenaline causes

A

depression
lack of focus

29
Q

excess serotonin causes

A

headache
confusion
tachycardia
HTN

30
Q

deficient serotonin causes

A

depression
anxiety
fatigue

31
Q

Nursing considerations for pts taking MAOIs

A

Up to 4 weeks therapeutic benefits

Educate pt S&S of HTN crisis

Avoid foods with Tyramine (aged cheese, fermented meats, chocolate, caffeinated beverages, sour cream and yoghurt)

32
Q

Nursing considerations for pts taking TCAs

A

up to 2- 3 weeks to see therapeutic benefits

Wait for 2 weeks before starting TCAs after being off from MAOIs

33
Q

Nursing considerations for pts taking SSRI

A

up to 4-6 weeks efficacy

Take meds during morning

First line drug for depression and anxiety

Pt (younger people) can be suicidal as they have the energy to plan

34
Q

Nursing considerations for SNRI

A

up to 4-6 weeks efficacy

DO NOT MIX WITH TCAs and MAOIs

DO NOT use it with Zyban (meds for smoking cessation) cause overdose