Schizophrenia and Other Psychotic Disorders Flashcards
What are some positive symptoms?
- Hallucinations
- Paranoia
- Delusions
- Hostility
- Disorganized speech
- Ideas of reference
What are some negative symptoms?
- Affect
- Alogia
- Avolition
- Asociality
- Anhedonia
Mesolimbic path of dopamine hypothesis
- VTA–>
- nucleus accumbens–>
- D2 blockade–>
- decrease in positive symptoms
Mesocortical path of dopamine hypothesis
- VTA–>
- Prefrontal cortex–>
- D2 blockade–>
- Increase in negative symptoms
Nigrostriatal path of dopamine hypothesis
- SN–>
- Basal ganglia–>
- D2 blockade–>
- Increase in EPS
Tuberoinfundibular path in dopamine hypothesis
- Hypothalamus–>
- Pituitary–>
- D2 blockade
- Increase in prolactin
What are some factors to consider when selecting a treatment?
- Side effect profile
- Past responses to treatment (symptom response and tolerability)
- Physical health conditions that may be affected by medication side effects
- Medication formulations
- Drug-drug interactions
What are the antipsychotic treatment response in hours to days?
- Agitation
- Aggression
- Motor activity
What are the antipsychotic treatment response in 2 to 6 weeks?
- Hallucinations
- Disorganized thinking
What are the antipsychotic treatment response in months or longer?
- Delusions
- Negative symptoms
What are the side effects of serotonin receptor antagonism?
- Reduces EPS
- Possibly improve cognition
- Antidepressant properties
What are the side effects of dopamine-D2 receptor antagonism?
- Therapeutic effect
- Extrapyramidal symptoms
- Hyperprolactinemia
What are the side effects of muscarinic-M1 receptor antagonism?
- Anticholinergic effects (dry mouth)
What are some histamine-H1 receptor antagonism?
- Sedation
- Weight gain
What are the side effects of alpha 1 receptor antagonism?
- Syncope
- Orthostatic hypotension
- Reflex tachycardia
What are some clinical pearls of haloperidol?
-IM:PO 1:2
What are some clinical pearls of fluphenazine?
-IM:PO 1:2
-Oral liquid should be diluted prior to use
What are some clinical pearls of chlorpromazine?
-Weight gain
-Sedation
-IM:PO 1:4
What are some clinical pearls of thiothixene?
- Smoking may reduce levels (CYP1A2 induction)
What are some clinical pearls of thioridazine?
- Highest QTc prolongation risk
What are some clinical pearls of trifluoperazine?
- Smoking may reduce levels (CYP1A2)
What are the long-acting formulations of the first generation antipsychotics?
- Haloperidol
- Fluphenazine
Dystonia
- EPS symptoms
- Within 24-96 hours of initiation
- Involuntary muscle contraction resulting in slow repetitive movements or abnormal postures
What is the presentation of dystonia?
- Facial grimacing
- Involuntary upward eye movement
- Muscle spasms of the tongue, face, neck, and back (back muscle spasms cause trunk to arch forward)
- Laryngeal spasms
What are the risk factors of dystonia?
- High potency antipsychotics
- High antipsychotic dose
- Young men
What are the treatments of dystonia?
- Diphenhydramine 25-50 mg IM/IV
- Benztropine 1-2 mg IM/IV
Akathisia
- EPS symptoms
- Days to weeks
- Inner motor restlessness
What are the presentations of akathisia?
- Restlessness
- Trouble standing still
- Paces the floor
- Feet in constant motion
- Rocking back and forth