Schizophrenia/Psychosis Flashcards
Three primary neurotransmitters involved in schizophrenia
dopamine
serotonin
glutamine
One of the biggest treatment barriers in schizophrenic patients
adherence
List of negative signs/symptoms
lack of emotion social withdrawal loss of motivation (avolition) lack of speech (alogia) poor hygiene
list of positive signs/symptoms
hallucinations
delusions
disorganized thinking/behavior
What are some drugs that can cause psychotic symptoms?
anticholinergics (high doses) dextromethorphan dopamine agonists (common in parkinson's patients) stimulants systemic steriods illicit substances
Main mechanism of antipsychotics
block dopamine receptors
newer drugs also block serotonin receptors
what type of symptoms do the drugs aim to treat
positive
What is first-line treatment and why?
second gen antipsychotics
less extrapyramidal symptoms (EPS)
What are some common EPS
dystonia (muscle contractions)
dyskinesias (abnormal movement)
tardive dyskinesia (repetitive movement)
akathisia (restlessness)
What should occur if a patient experiences tardive dyskinesia
d/c drug
this can be irreversible
What is a common “cocktail” to schizophrenic patients to add sedative effects and reduce dystonias
IM antipsychotic + BZD + anticholinergic
Which antipyschotic should absolutely not be given with BZDs due to excessive sedation
Olanzapine
What’s important to know about antipyschotics and elderly patients
Should NOT be used in dementia-related psychosis due to increased risk of mortality/stroke
All antipsychotics carry a warning for _____
falls
MOA FGA (first gens)
block D2 reception with little to no serotonin receptor blockade
List of low potency FGAs
chlopromazine
thioridazine
List of mild potency FGAs
loxapine
perphenazine
list of high potency FGAs
haloperidol
what drug can be used for Tourette syndrome
haloperidol
How often is haldol deconate injected?
monthly
how often is fluphenazine deconate injected
q 2 weeks