Antipsychotics Flashcards
What is psychosis?
A variety of mental disorders with multiple causes and manifestations
Severe psychiatric disorders are characterized by what?
Delusion and hallucinations
Positive or negative symptom of schizophrenia: delusions/hallucinations
Positive
Positive or negative symptom of schizophrenia: agitation
Positive
Positive or negative symptom of schizophrenia: emotional apathy
Negative
Positive or negative symptom of schizophrenia: paranoia
Positive
Positive or negative symptom of schizophrenia: socially withdrawn
Negative
Positive or negative symptom of schizophrenia: Intrusion of thoughts
Positive
Positive or negative symptom of schizophrenia: inattentiveness
Negative
Positive or negative symptom of schizophrenia: aberrant thinking
Positive
Schizophrenia is what type of disorder?
Neurodevelopmental
What is the difference between the positive and negative symptoms of schizophrenia?
Positive is a manifestation of abnormal behavior
Negative is absence of normal behavior
What is the dopamine hypothesis of schizophrenia?
Hyperactivity of the mesolimbic mesocortical DA system causes psychosis
What is the MOA of many of the antipsychotic drugs?
Block D2 receptors
What are the postmortem findings of a schizophrenia brain?
DA levels and D2 receptors density are increased
Why is the dopamine theory of schizophrenia no perfect?
Cannot explain the cognitive impairment
What is the route of innervation from the hippocampus to the cortical regions?
Hippo to VT to cortical regions
What is the serotonin hypothesis of schizophrenia? What leads credence to this theory?
Overactivation of 5HT2A receptors
Blocking these work
What is the glutamate hypothesis of schizophrenia? What leads credence to this theory?
Hypofunction of NMDA receptors can lead to hyperstimulation of cortical neurons
NMDA inhibitors can exacerbate symptoms
What are neuroleptics?
Subtype of antipsychotics that produce extrapyramidal side effects
What are the extra pyramidal symptoms?
Parkinsonian-like symptoms
What are the typical vs atypical antipsychotics?
Typical = older Atypical = newer
What is the major change with atypical antipsychotics compared to typical?
Less extrapyramidal effects
What are the four main therapeutic indications for antipsychotics?
Schizophrenia
Psychotic behaviors
Severe mania
Antiemetic
What are the four typical antipsychotics?
Chlorpromazine
Thioridazine
Fluphenazine
Haloperidol
What are the 6 atypical antipsychotics?
Clozapine Olanzapine Risperidone Aripiprazole Quetiapine Ziprasidone