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44 Cards in this Set
- Front
- Back
low potency typical agents
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-chlorpromazine
-thioridazine |
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typical agents MOA
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dopamine antagonists (greater affinity at D-2 yhan D-1) that have effects on all 4 dopaminergic pathways
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decreased dopamine release or dopaminergic inactivation occurs after how many days?
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21d
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low poteny or high potency agents have less specificity for dopamine receptors
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low potency
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low potency agents are associated with:
-EPS rxns -sedation -postural hypotension -seizure threshold -ECG -anticholinergic adverse effects |
-fewer EPS rxns than high potency
-more sedation -more postural hypotension -greater effect on SZR threshold and ECG -more frequent anticholinergic effects |
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receptor blockade for typical AP
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-histamine
-muscarinic -a1 adrenergic -dopamine D2 |
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adverse effects of dopamine D2 blockade
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-EPS
-prolactin elevation |
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dystonia treatment
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-benztropine 1-2mg IM
-diphenhydramine 25-50mg IM -above may be given as scheduled oral doses for at least 1 month after dystonia resolved |
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dystonia prophylaxis
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benztropine may be given when high potency APs initiated
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akathisia treatment
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-propanolol
-diazepam |
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pseudoparkinsonism treatment
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-benztropine 1-2mg bid
-trihexyphenidyl 2-5mg tid -diphenhydramine 25-50mg tid -amantadine 100mg bid -give for 6w-3m after sxs resolve |
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tardive dyskinesia treatment
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-decrease dose of typical AP
-switch to atypical AP -vitamin E 1200-1600IU/d -BZDs -botulinum toxin -clozapine |
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APs that have highest potential to cause SZRS
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-clozapine
-chlorpromazine |
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neuroleptic malignant syndrome treatment
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-d/c AP
-dopamine agonist - bromocriptine -skeletal muscle relaxants - dantrolene |
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APs most likelt to cause ECG changes and prolong QTC interval
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-thioridazine
-ziprasidone |
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agents most likely to cause increase in prolactin
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-typical APs
-risperidone |
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fluphenazine oral to deconoate
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10mg/day oral = 12.5mg IM q2wk
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haloperidol oral to deconoate
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10mg/day oral = 100-150mg IM q4wk
(initial injection shouldn't exceed 100mg) |
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atypical antipsychotics (6)
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-clozapine
-risperidone -olanzapine -quitiapine -ziprasidone -aripiprazole |
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list 7 potential advantages of atypical agents over conventional agents
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1)improved response to neg sxs
2)mood stabilizing effects 3)pos response in pts refractory to traditional agents 4)reduced risk of EPS 5)reduced risk of TD 6)improved compliance 7)minimal effect on serum PL |
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clozapine FDA indications
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1)schizophrenia, tx resistant
2)suicidal behavior (reserved for pts refractory to at least 2 adequate trials of other AP drugs) |
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clozapine adverse effects (6)
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-hypersalivation
-tachycardia -constipation (antichol effec) -weight gain -glucose dysregulation -increased lipids |
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list 4 black box warnings for clozapine
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1)agranulocytosis and granulocytopenia
2)myocarditis 3)seizures 4)orthostasis |
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clozapine therapy guidelines based on WBC and granulocyte count
WBC<3500, h/o myeloproliferative d/o, previous clozapine-induced agranulocytosis or granulocytopenia |
do not initiate treatment
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WBC 3000-3500
granulocyte count >1500 |
-interrupt therapy
-perform twice weekly WBC and differential counts |
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WBC <3000
granulocyte count <1500 |
-interrupt therapy
-may resume therapy if no s/x of infection develop, WBC >3000 and granulocyte count >1500 -twice weekly blood counts until WBC>3500 |
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WBC <2000
granulocyte <1000 |
-consider bone marrow aspiration
-possible protective isolation -antibiotics if infection develops -DO NOT RECHALLENGE |
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clozapine monitoring
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CBC must be drawn weekly x6months; then biweekly x6months; then q4wks thereafter
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clozapine initial dose
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12.5-25mg qhs
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increasing clozapine dose
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25mg daily until a dosage of 300mg daily is achieved (subsequent dose changes should be made once weekly in small increments)
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maximum clozapine dose
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900mg/daily
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how to restart patients who have had a brief interval off clozapine (2 days or more)
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treatment needs to be reinitiated at 25mg/day
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risperidone FDA indications
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1)schizophrenia
2)bipolar mania (acute) |
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risperidone adverse effects (2)
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1)EPS (higher doses)
2)prolactin elevation (higher doses) |
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risperidone doses exceeding what are not recommended and associated w/ more EPS and adverse effects
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6mg
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olanzapine FDA indications
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1)schizophrenia
2)agitation associatged w/ schizophrenia 3)bipolar mania (acute) 4)bipolar d/o maintenance |
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olanzapine adverse effects (3)
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1)weight gain
2)glucose dysregulation 3)increased lipids |
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quetiapine FDA indications
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1)schizophrenia
2)bipolar mania (acute) |
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quetiapine adverse effects (2)
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1)drowsiness
2)lens examination to detect cataract formation recommended at initiation and at 6-month intervals |
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ziprasidone FDA indications
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1)schizophrenia
2)agitation associated w/ schizophrenia 3)bipolar mania |
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ziprasidone adverse effects (1)
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1)QTC prolongation
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aripiprazole FDA indications
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1)schizophrenia
2)bipolar mania |
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aripiprazole MOA
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-partial agonist at D2 and 5HT1A receptors
-5HT2A antagonist -moderate alpha-1 adrenergic blockdade -moderate antihistaminergic effect |
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List 5 monitoring and assessment parameters for atypical APs
1)wt and ht 2)waist circumference 3)fasting glucose 4)fasting lipid panel 5)blood pressure |
1)baseline, 4wks, 8wks, 12wks, thenquarterly
2)baseline, then annually 3-5)baseline, 12wks,then annually |