Depression Flashcards

1
Q

What is depression?

A

Persistent low mood/ loss of pleasure in most activities

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2
Q

What are the two core symptoms?

ask about in the last month

A

Feeling down/ depressed/ hopeless

Loss of interest/ pleasure in doing things

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3
Q

What 7 symptoms make up the additional symptoms of depression?

(ask about in the last 2 weeks)

A
Fatigue/ loss of energy
Guilt
Suicidal thoughts
Inability to think/ concentrate
Psychomotor agitation or retardation
Insomnia/ hypersomnia 
Increased appetite/ weight loss
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4
Q

How might atypical depression present?

A

Reactive mood increased appetite, excessive sleep, sensitivity to rejection

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5
Q

Based on the 9 symptoms, how is depression diagnosed?

A

5 symptoms, with at least one being a core symptom

feeling down + lost of interest/ pleasure

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6
Q

What defines ‘sub-threshold depressive symptoms’?

A

Person has at >2 but <5 of the symptoms

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7
Q

What is dysthymia?

A

Persistent sub-threshold depression (lasting >2 years)

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8
Q

What questions would you ask in a suicide screen?

A
  1. do you ever feel like life is not worth living?
  2. Do you ever think about suicide?
  3. Ever made plans to end life?
  4. Do you have the means to do so?
  5. What prevents you from acting on this?
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9
Q

What is the PHQ-9?

A

Quesionnaire to asses depression

Max score is 27. 12 recommended to consider intervention

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10
Q

How can mild-moderate depression be managed?

A

CBT

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11
Q
What class of drug is first line for management of moderate-severe depression?
Give 3 examples
A

SSRI

Citalopram
Fluoextine
Sertraline

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12
Q

How do SSRIs work?

A

Inhibit re-uptake of serotonin, increasing its availability for neurotransmission

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13
Q

How long can they take to work?

What can happen in this time?

A

Up to 3-4 weeks

Symptoms may initially get worse

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14
Q

Why shouldn’t they be stopped suddenly?

How should they be stopped?

A

Withdrawal symptoms

Should slowly lower dose over several weeks

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15
Q

What is the effect of SSRIs on sodium?

A

Can cause hyponatraemia

May present with confusion

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16
Q

What is the effect of SSRIs and tricyclics on QT interval?

A

Prolonged QT interval

17
Q

Why are SSRIs not recommended in epilepsy?

A

Lower the seizure threshold

18
Q

What is serotonin syndrome? (triad)

A
  1. Autonomic hyperactivity
  2. Altered mental state
  3. Neuromuscular excitation
19
Q

What are the symptoms of sudden withdrawal of SSRI?

A

GI upset, flu-like symptoms, sleep disturbance

20
Q

When should you take caution in prescribing SSRIs?

A

Epilepsy, peptic ulcer disease
Young people
Hepatic impairment

21
Q
What drug class do SSRIs &amp; tricyclics interact with?
Why is this bad?
A

Monoamine oxidase inhibitors

Both increase serotonin, may lead to serotonin syndrome

22
Q

Give two examples of tricyclics

A

Amitriptyline

Amoxapine

23
Q

Other than depression, what is an indication for tricyclics?

A

Neuropathic pain

24
Q

How do tricyclics work?

A

Inhibit reuptake of serotonin + noradrenaline

25
Q

Why do tricyclics have so many side effects?

A

They block a wide range of receptors in the body

26
Q

Antimuscarinic SEs of tricyclics

A

Dry mouth, constipation, urinary retention, blurred vision

27
Q

H1 + A1 receptor SEs of tricyclics

A

Sedation + hypotension

28
Q

Cardiac SEs of tricyclics

A

Arrhythmias

Prolonged QT

29
Q

Cerebral SEs of tricyclics

A

hallucinations
Convulsions
Mania

30
Q

Dopamine receptor SE of tricyclics

A

Sexual dysfunction

31
Q

What are the effects of sudden tricyclics withdrawal?

A

GI upset, hypotension, convulsions, respiratory failure

32
Q

What are cautions for presctibing tricyclics?

hint: think side effects

A
Elderly
Epilepsy
CVD
Constipation
Prostatic hypertrophy