PSYCH 123 Depression Flashcards

1
Q

What defines mild depression?

A

2 core symptoms + 2 others

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2
Q

What defines moderate depression?

A

2 core symptoms +3/4 others

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3
Q

What defines severe depression?

A

Core symptoms are severe and 4 others that are intense. Can be +/- psychotic symptoms

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4
Q

What is step 1 of the stepped care model for management of depression?

A

Assessment and signposting

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5
Q

For who would step 2 of the stepped care model for managing depression apply? How would you manage?

A

Those with persistent sub-threshold symptoms of mild/moderate depressions
Manage with self help e.g. CBT

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6
Q

What would you start/implement if there are inadequate responses to interventions?

A

Antidepressants and high intensity psychological intervention.

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7
Q

Where are neurotransmitters synthesized?

A

Neurones

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8
Q

Where are most neurotransmitters located (excluding endocannabinoids)?

A

In the presynaptic terminal

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9
Q

What happens when there is prolonged stimulation at Glutamate receptors?

A

Hyper-excitability: seizures and strokes

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10
Q

What happens when Glutamate receptors are blocked and give an example of what they are commonly blocked by?

A

Sedation

Alcohol and Ketamine

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11
Q

What Glutamate receptors are permeable to both Calcium and Sodium?

A

Kainate and NMDA

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12
Q

What glutamate receptor is only permeable to Sodium?

A

AMPA

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13
Q

What is the main inhibitory neurotransmitter in the nervous system?

A

GABA

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14
Q

What drugs activate GABA receptors?

A

Benzodiazepines, lorazepam and alcohol

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15
Q

What happens when GABA receptors are blocked?

A

Hyper-excitability

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16
Q

What do astrocytes do?

A

Act as support cells or for damage repair

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17
Q

What do oligodendrocytes do?

A

Myelinate nerve cells

18
Q

What are microglia?

A

Macrophages of the nervous system

19
Q

What do ependymal cells make and where are they found?

A

They make CSF and are epithelial cells lining the ventricles

20
Q

Where are the cell bodies of the neurones that make serotonin?

A

In the raphe nucleus

21
Q

Where is serotonin stored in the GI tract and what does its release trigger?

A

Enterochromaffin cells and triggers peristalsis

22
Q

Name a drug that activates and another that blocks the 5HT2A receptor.

A

Activates: LSD

Blocked by: clozapine - an atypical antipsychotic

23
Q

What is sumatriptan and what receptor does it activate?

A

It is a migraine treatment and activates 5HT1B

24
Q

What is the only serotinergic ionotropic receptor and name a drug that blocks it

A

5HT3 and is blocked by ondanseton an antiemetic

25
Q

Name a contraindication in the prescription of SSRI’s

A

Under 18 ( increased risk of suicide),

26
Q

Name briefly the mechanism of action of SSRI’s and give an example of two

A

They inhibit the synaptic reuptake of serotonin.

Citalopram and fluoxetine

27
Q

Name an SNRI

A

Tramadol or sibutramine

28
Q

Name a specific cardiac complication with citalopram

A

Prolonged QT interval

29
Q

Name some side effects of SSRI’s

A

Hyponatraemia, nausea, anaemia, GI distrubances, loss of libido

30
Q

In the cholinergic system where do the basal forebrain cholinergic neurones project to? What processes are they involved in?

A

The cortex and hippocampus.

Memory and cognition

31
Q

Where do the cholinergic neurones of the basal stem tegmenteum project to and what are they involved in?

A

Thalamus, brainstem and cerebellum

Arousal and the sleep wake cycle

32
Q

What two classes of receptor are there in the cholinergic system?

A

Nicotinic (ionotropic and excitatory) and Muscarinic (metabotropic)

33
Q

Name disorders that are to do with dopamine

A

Schizophrenia, Parkinsons and Tourrettes

34
Q

Where is noradrenaline made?

A

locus coerulus

35
Q

Name a tricyclic antidepressant

A

Amitryptilline, butryptilline

36
Q

How do TCA’s work?

A

Inhibit reuptake of NT (NA) by competing for binding at the presynaptic neurone

37
Q

Name some anti-muscarinic side effects of TCA’s

A

blurred vision, dry mouth, constipation and urinary retention

38
Q

Name some side effects as a result of blocking the alpha-1 receptor

A

Postural hypotension, tachycardia, ventricular dysrhythmias and prolonged QT interval

39
Q

Name some contraindications of TCA prescription

A

prostatism, narrow angle glaucoma, recent MI, heart block

40
Q

Where are endogenous opioids made and where do they project?

A

Hypothalamus –> peri-aqueductal grey and brainstem

41
Q

Name the 3 classes of opioids

A

Enkephalins, Dynorphins and endorphins