Psychosis and Schizophrenia Flashcards
Which two theories outline the pathogenesis of Schizophrenia and its subsequent Rx?
- DA Theory
• Amphetamine –> Schizophrenia Sx
• D2-receptor agonists –> Similar Symptoms
• Strength of Neuroleptics and D2 antagonist action
• Increased Dopamine content in amygdala (temporal lobe)
• Increased Dopamine content in Striatum of Schizophrenics - Glutamate Theory
• NMDA receptor antagonists (phencyclidine/ketamine) –> psychotic Sx
• Reduced glutamate receptor density and expression –> Schizophrenic brain slices
• TG mice with NMDA receptor expression –> Schizophrenic behaviours
–> Restored with antipsychotics/neuroleptics
List the 4 Dopamine pathways which are affected in Schizophrenia. What do each do?
- Nigrostriatal Pathway (Motor planning of purposeful movement)
- Mesolimbic Pathway (+ Mesocortical –> Reward)
- Mesocortical Pathway (Working memory/Cognition/Decision making + Mesolimbic –> Reward)
- Tuberohypophyseal Pathway (Endocrine function –> PL release)
List 3 First Generation Antipsychotics.
- Chlorpromazine* (D1, D2, a1, H1, mACh, 5-HT2A)
- Fluphenazine
- Pipotiazine
- Haloperidol (D1, D2, a1, H1, 5-HT2A)
- Flupentixol (D1, D2, H1, 5-HT2A)
- Zuclopenthixol
- Chlorpromazine binds all receptors –> Side effects
List 3 Second Generation Antipsychotics.
- Amisulpride (D2 + D3 receptor antagonist)
- Clozapine (low D1/low D2/high a1/high H1/mAch/high 5-HT2A)
- Olanzapine (unselective receptor blocking)
- Risperidone (low D1/high D2/H1/High 5-HT2A)
- Paliperidone
- Quetiapine (a adrenoceptor blocker)
- Aripiprazole (low D1, high D2, a1, H1, 5-HT)
Which drug would treat positive and negative symptoms?
A. Haloperidol
B. Risperidone
C. Flupentixol
D. Zuclopenthixol
B. Risperidone
Which drug would treat both positive and negative symptoms?
A. Haloperidol
B. Aripiprazole
C. Chlorpromazine
D. Zuclopenthixol
B. Aripiprazole
Which drug would least likely cause cause adverse side effects in a patient?
A. Haloperidol
B. Aripiprazole
C. Chlorpromazine
D. Zuclopenthixol
B. Aripiprazole
Which drug would least likely cause cause adverse side effects in a patient?
A. Haloperidol
B. Risperidone
C. Chlorpromazine
D. Zuclopenthixol
B. Risperidone
Which drug would least likely cause cause adverse side effects in a patient?
A. Haloperidol
B. Quetiapine
C. Chlorpromazine
D. Zuclopenthixol
B. Quetiapine
Which drug is the standard second line treatment for resistant Schizophrenia?
A. Haloperidol
B. Risperidone
C. Clozapine
D. Zuclopenthixol
C. Clozapine
Which drug has high affinity to D1, D2, H1, mACh and 5-HT receptors?
A. Haloperidol
B. Quetiapine
C. Chlorpromazine
D. Zuclopenthixol
C. Chlorpromazine
Which drug has high affinity to D1, D2, H1, mACh and 5-HT receptors?
A. Haloperidol
B. Quetiapine
C. Clozapine
D. Zuclopenthixol
C. Clozapine
Which drug is highly selective for the D2 receptor?
A. Haloperidol
B. Aripiprazole
C. Clozapine
D. Zuclopenthixol
B. Aripiprazole
Which drugs are most likely to have higher chances of metabolic adverse effects?
A. Haloperidol
B. Quetiapine
C. Clozapine
D. Zuclopenthixol
B. Quetiapine
Which drugs are most likely to have higher chances of metabolic adverse effects?
A. Haloperidol
B. Olanzapine
C. Clozapine
D. Zuclopenthixol
B. Olanzapine
What is Neuroleptic Malignant Syndrome?
List 5 Symptoms.
Rare condition occurring in early stage of treatment with antipsychotic drugs whereby treatment is supportive
- Hyperthermia
- ∆ consciousness
- Muscle rigidity
- Pallor
- Tachycardia
- Labile blood pressure
- Sweating
- Urinary incontinence
- Elevated Creatinine Phosphokinase (CPK) level
List 5 ASEs of Lithium
- Fine tremor
- Dry mouth
- Altered taste
- Increased thirst
- Increased urination
- Nausea
- Weight gain
- ECG ∆s
- Goitre
- Hypothyroidism
- Hyperparathyroidsm
- Hypercalcemia
- Leukocytosis
- Increased Weight/Dryness
- Taste/Thirst (Nephrogenic Diabetes Insipidus)
- Hypothyroidism/Hyperparathyroidism/Hypercalcemia
- Increased Urine Output (Polyuria)
- Movement/Memory change
List 5 clinical features of Lithium toxicity.
- Vomiting
- Diarrhoea
- Coarse tremor (large movements)
- Muscle weakness
- Ataxia
- Slurred speech
- Blurred vision
- Lethargy
- Confusion
- Seizures
In neuroleptics, what system is affected to elicit the side effect of Galactorrhoea and Gynecomastia?
A. D2 (mesocortical)
B. H1
C. mACh
D. D2 (Tuberohypophyseal)
D. D2 (Tuberohypophyseal)
In neuroleptics, what system is affected to elicit the side effect of Amenorrhoea?
A. D2 (mesocortical)
B. H1
C. mACh
D. D2 (Tuberohypophyseal)
D. D2 (Tuberohypophyseal)
In neuroleptics, what system is affected to elicit the side effect of Tardive Dyskinesia?
A. D2 (mesocortical)
B. D2 (nigrostriatal)
C. mACh
D. D2 (Tuberohypophyseal)
B. D2 (nigrostriatal)
In neuroleptics, what system is affected to elicit the side effects of salivation and lacrimation?
A. D2 (mesocortical)
B. D2 (nigrostriatal)
C. mACh
D. D2 (Tuberohypophyseal)
C. mACh
In neuroleptics, what system is affected to elicit the side effects of urinary retention and diaphoresis?
A. D2 (mesocortical)
B. H1
C. mACh
D. D2 (Tuberohypophyseal)
C. mACh
In neuroleptics, what system is affected to elicit the side effects of Emesis and GI upset?
A. D2 (mesocortical)
B. H1
C. mACh
D. D2 (Tuberohypophyseal)
C. mACh