Antipsychotics (Segars) Flashcards
Specific indication Clozapine
recurrent suicidal behavior
specific indication Pimavanserin
hallucinations/delusions associated with parkinsons disease psychosis
Dopamine pathway responsible for positive symptoms of schizophrenia
overactivity of the mesolimbic pathway
dopamine pathway responsible for the negative and cognitive symptoms of schizophrenia
mesocortical pathway dysfunction
positive symptoms of schizophrenia (5)
- hallucinations
- delusions
- disorganized speech/thinking
- agitation
- abnormal motor behavior
negative symptoms of schizophrenia (5)
- apathy
- avolition
- alogia
- cognitive deficits (working memory)
- social withdrawal
primary difference between first generation and second generation antipsychotics
reduced movement disorder side effects in second generation agents
receptors blocked by first generation antipsychotics (4)
1) primarily D2 post-synaptic receptors
2) Muscarinic
3) H1 receptors
4) alpha-1 receptors
first generation anti-psychotics low potency agents (2)
1) thioridazine
2) chlorpromazine
first generation anti-psychotics high potency agents (2)
1) fluphenazine
2) haloperidol
first generation anti-psychotics low potency agent side effects
more sedation, hypotension and seizure-threshold reduction
first generation anti-psychotics high potency agent side effects
more movement (EPS) and endocrine effects (prolactin)
treatments for extrapyramidal symptoms (EPS) (2)
1) anticholinergic agents (benztropine and trihexyphenidyl)
2) antihistamine agents (diphenhydramine)
treatments for tardive dyskinesia
selective vesicular monoamine transporter 2 (VMAT2) inhibitors:
1) valbenazine
2) deutetrabenazine
suffix of VMAT2 inhibitors
- benazine
Second generation antipsychotics MOA (general)
stronger 5HT-2A receptor blockers than D2 receptor blockers
Suffix second generation antipsychotics that are 5HT-2A/DA receptor antagonists
- idone
Suffix second generation antipsychotics that are partial DA/5HT-1A receptor agonists
- piprazole
Suffix second generation antipsychotics that are multi-acting receptor-target agents
- apine
second generation antipsychotic that is an inverse serotonin agonist/antagonist
Pimavanserin (for parkinsons psychosis)
MOA Cariprazine (2)
1) 5HT-2A/DA receptor antagonist
2) partial DA/5HT-1A receptor agonist
Main side effects second generation antipsychotics
metabolic effects/weight gain
What second generation antipsychotic causes agranulocytosis rarely? How is this monitored?
Clozapine; monitor WBC and enroll in REMS program
What is a rare side effect of Olanzapine
drug reaction with eosinophilia and systemic symptoms (DRESS)