Psychiatry Flashcards

1
Q

What is Creutzfeldt-Jakob disease (CJD)

A

Creutzfeldt-Jakob disease (CJD) is a rapidly progressive neurological condition caused by a mis-folded protein, known as a prion.

he prion causes huge cell death in the brain; progressing rapidly from mild memory and mood changes to myoclonus, speech and language impairment, seizures and death. On post mortem, brain tissue samples shows prominent and widespread vacuole development creating a spongiotic appearance. This is associated with also massive neuronal loss. The average life expectancy in CJD is only around 5 months and it is invariably fatal.

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2
Q

What is splitting?

A

Phenomenon sometimes seen with emotionally unstable personality disorder.
Relationships alternate between idealisation and devaluation.

As a result patients may regard others as either wholly good or wholly bad, without reasonable grounds.

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3
Q

How does Normal Pressure Hydrocephalus present?

A

Wet (incontinent), Wobby, wacky

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4
Q

How long does acute stress reaction last?

A

No more than 1 month.

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5
Q

Difference between acute stress reaction and adjustment disorder?

A

Acute stress reaction is due to highly stressful event ie mugging.

Adjustment disorder is where the stressor is not as severe or outside the norm ie redundancy.

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6
Q

Can patients with previous heart disease take trycyclic antidepressnets?

A

No. CI.

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7
Q

What are the side effects of memantine?

A

Constipation
Confusion
Hallucination

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8
Q

How long should a hypomanic and a manic episode last?

A

Hypomanic - must be present for 4 days for an episode to be diagnosed

Manic - must be present for a week for an episode of mania to be diagnosed.

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9
Q

When does depression need to occur after birth for it to be classed as post-partum depression?

A

12 months

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10
Q

How long does a period of low mood/depression symptoms need to last for it to be classed as depression?

A

2 weeks

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11
Q

What will be raised in the blood in anorexia nervosa?

A

Cholesterol

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12
Q

How is the QT interval affected in anorexia?

A

Long QT interval (hypokalaemia)

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13
Q

Side effects of 1st line mild Alzheimer’s drugs?

A

Cholinergic side effects
SLUDGE
S - salivation
L - lacrimation
U - urinary incontinence
D - diaphoresis, increased salivation
G - GI distress (diarrhoea, N+V)
E - meiosis (pinpoint pupils)

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14
Q

SEs of anticholinergic drugs:

A

Hot as a hare - high temp
Dry as a bone - decreased sweating/dry mouth
Blind as a bat - dilated pupils - blurry vision
Red as a beet - high temperature
Mad as a hatter
+ constipation

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15
Q

What would a pansystolic murmur with a click indicate in the context of anorexia nervosa?

A

Mitral valve prolapse due to loss of heart muscle, with the mitral valve remaining the same size.

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16
Q

What is knights move thinking?

A

Named after they way the knight moves in chess.
This thought disorder is characterised by illogical leaps between unconnected ideas. Also known as loosening of associations.

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17
Q

What is the first line drug for panic diorder?

A

SSRI

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18
Q

Describe what happens in thought blocking

A

Patient is talking then abruptly stops for a few seconds. Then starts talking about a completely different topic.

19
Q

What type of antidepressnets cause sexual dysfunction?

A

SSRIs

20
Q

How can you tell the difference between mania and hypomania?

A
  • mania symptoms must last at least 7 days. Hypomania must last at least 4 days
  • psychotic symtoms are inly seen in mania (ie delusions of grandeur)
21
Q

Low levels of which neurotransmitter are associated with the development of anxiety?

A

GABA
It has an inhibitory effect on the brain and reduces neuronal excitability. This means there is a reduced inhibitory effect in the brain, allowing neurons to activate at an increased rate.

22
Q

What things in the blood are high in anorexia?

A

Gs and Cs are high
- high cortisol
- high cholesterol
- high growth hormone
- salivary Glands enlargement

Exception is glucose which is low

23
Q

What drug is used to treat EPSEs caused by anti-psychotics?

A

Procyclidine - anti-cholinergic.
Helps balance out the balance between dopamine and acetylcholine in the brain.

24
Q

Woman is prescribed amitryptiline for depression.
Most common side effect of amitryptiline?

A

Urinary retention due to anti-cholinergic effect

25
Q

What is the most common side effect of 2nd generation anti-psychotics?

A

Weight gain

26
Q

What is the 2nd line ADHD med?

A

Atomexine
Noradrenaline reuptake inhibitor

27
Q

In meningitis, Which abx is for children in hospital who are
A. Under 3 months old
B. Over 3 months old

A

A. Cefotaxime
B. Ceftriaxone

28
Q

What monitoring does methylphenidate (Ritalin) need in children?

A

Measure height and weight every 6 months as Ritalin can cause reduced appetite and therefore slow growth.

29
Q

Which part of the brain shows reduced function in ADHD?

A

Frontal lobe

30
Q

Diagnostic criteria for PTSD

A

Symptoms must last >1 month and be interfering with daily life

31
Q

Clinical features of lithium at therapeutic dose

A

Fine tremor
Dry mouth
Gastrointestinal disturbance
Increased thirst
Increased urination
Drowsiness
Thyroid dysfunction

32
Q

Clinical features of lithium toxicity

A
  • Coarse tremor
  • Central nervous system disturbance, which may include seizures, impaired coordination, and dysarthria
  • Cardiac arrhythmias
  • Visual disturbance
33
Q

What is the classic triad of normal pressure hydrocephalus?

A

Gait disturbance + dementia + urinary incontinence

34
Q

What does normal pressure hydrocephalus look like on MRI?

A

Dilated ventricles disproportionate to cerebral atrophy

35
Q

Side effects of SSRIs

A

GI upset
Anxiety and agitation
QT interval prolongation (especially associated with citalopram)
Erectile dysfunction
Hyponatraemia
Gastric Ulcer

36
Q

Side effects of TCAs

A

Tricyclic anti-depressants are a second line medication for depression. They are strongly associated with anti-cholinergic activity. Consequently, the common side effects include:

Urinary retention
Drowsiness
Blurred vision
Constipation
Dry mouth

37
Q

Cautions with SNSRIs

A

Should be omitted in mania
Should be used with caution in children and adolescents

38
Q

Which antidepressent is best for those with previous heart disease?

A

Sertraline

39
Q

Cautions with TCAs

A
  • Contraindicated in those with previous heart disease
  • Can exacerbate schizophrenia
  • May exacerbate long QT syndrome
  • Use with caution in pregnancy and breastfeeding
  • May alter blood sugar in T1 and T2 diabetes mellitus
  • May precipitate urinary retention, so avoid in men with enlarged prostates
  • Uses the Cytochrome P450 metabolic pathway, so avoid in those on other CP450 medications or those with liver damage
40
Q

Who are SNRIs (duloxetine) CI in?

A

history of heart disease and high blood pressure

41
Q

Which drug should you avoid in a patient with Parkinson’s?

A

Antipsychotics because of EPSEs.

42
Q

What are the side effects of carbamazapine?

A

Mnemonic “CARBA MEAN”:

Confusion
Ataxia
Rashes
Blurred vision
Aplastic anaemia

Marrow suppression
Eosinophilia
ADH release
neutropenia

43
Q

What is the cause of “wet”, “wobbly” and “wierd”

A

Normal pressure hydrocephalus.

Enlarged ventricles and absent sulci seen on CT brain scan

44
Q

What ECG change can haloperidol cause?

A

Prolongation of QT interval.

I remember this as sometimes NPS can cause hyperkalaemia and hyperkalaemia causes long QT interval.