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NURS 572 Ch31
Ch 31 antipsychotics- schizophrenia
| Question | Answer |
|---|---|
| positive symptoms of schizophrenia | exaggerate normal fxn: delusions, hallucinations, paranoia, agitation, combative, disordered speech/thought |
| negative symptoms of schizophrenia | decreased normal function: social/emotional withdrawal, lack of motivation, poverty of speech, poor judgement/care |
| general MOA conventional first generation | improve positive symptoms more than negative, cognitive |
| 1st generation receptor action | block dopa D2/D2a. Variably block H-1, Alpha-1, muscarinic |
| 2nd generation receptor action | MODERATE blockage of dopa D2. Moderate blocker of SEROTONIN 5HT-2. MUCH LESS variable blockage of H-1, Alpha-1, muscarinic |
| 1st generation ADRs - group 1 | EPS, parkinsonism, akathisia, DARTA, tardive dyskinesia |
| 1st generation ADRs - group 2 | agranulocytosis, sedation, orthostatic hypoTN, dermatological (sun sensitivity, contact derm) |
| 1st generation ADRs - group 3 | neuroepileptic syndrome, seizure, sexual dysfunction |
| name 3 first generation drugs | chloropromazine, loxapine, haloperidol |
| chloropromazine | 1st gen, low potency (orthostatic hypoTN) |
| loxapine | 1st gen, medium potency |
| haloperidol | 1st gen, high potency |
| 2nd generation ADRs - group 1 | lower EPS, lower histamine/alpha-1/muscarinic |
| 2nd generation ADRs - group 2 | agranulocytosis, seizures |
| 2nd generation ADRs - group 3 | diabetes, weight gain, myocarditis, prolonged QT-c |
| name 6 2nd generation drugs | clozapine, rispiradone, olanzapine, quetiapine, ziprasidone, aripiprazole |
| clozapine | 2nd gen, agranulocytosis likely, CBC/diff |
| rispiradone | 2nd gen, --> EPS > 10mg |
| olanzapine | also for bipolar |
| quetiapine | CYP450 metab, cataracts, dislipidemia-->CAD risk factor |
| ziprasidone - IM | greatest PT-c prolongation potential |
| aripiprazole | long acting. partial D2/5HT-1 agonist and pure 5HT-2 antagonist |
| which drug must likely SE of orthostatic hypoTN | chlorpromazine (1st gen) |
| which are most common dose related SEs 1st gen | anticholinergic, orthostatic hypoTN-alpha1 blocking, sedation-histamine blocking |
| which 1st generation ADR is rare but irreversible | tardive dyskinesia (mouth, muscles of mastication chorea-like) |
| which atypical/2nd generation greatest potential for QTc prolongation | ziprasidone |
| which 2 first generation/conventionals greatest potential for QTc prolongation | chlorpromazine, haloperidol |
| which generation of drugs in class most likely to be associated with diabetes | 2nd generation atypicals - all except ariprazole |