Shared Flashcard Set

Details

Antipsychotics
n/a
19
Medical
Graduate
10/20/2009

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Cards

Term
Psychosis
Definition
Loss of contact with reality - hallucinations and delusions
Term
Diagnosis of psychosis
Definition
1 month of 2 or more of: delusions, hallucinations, disorganized speech, grossly disorganized/catatonic behavior, negative symptoms (affective flattening/alogia/avolition)
Term
Blockage of NMDA
Definition
Ketamine and PCP
Term
D1/5
Definition
Stimulates adenylyl cyclase and increases cyclic AMP
Term
D2/3/4
Definition
Inhibits adenylyl cyclase and decreases cAMP; D2 is classic antipsychotic target; localized in the caudate, putamen and nucleus accumbens; in pituitary DA blockage leads to prolactin secretio; chemoreceptor antiemetic triggering
Term
Phenothiazines
Definition
Example: chlorpromazine; Low potency, anti-cholinergic and histamine problems, orthostasis, alpha blockade
Term
Thioxanthenes
Definition
Example: perphenizine
Term
Risperidone, palliperidone, ziprasidone, olanzapine, clozapine, quietapine, ariprprazole
Definition
Atypical antipsychotics
Term
Mechanism of Atypical antipsychotics
Definition
5HT2a blockade, variable D2 potency
Term
Aripriprazole (abilify)
Definition
Partial D2 agonist and 5HT1a but blocks 5HT2a
Term
Clozapine
Definition
Can cause seizures, neutropenia and agranulocytosis
Term
IV halidol
Definition
ICU delirium
Term
Extrapyramidal effects
Definition
Bradykinesia, tremor, dystonia
Term
Sedation (H1 blockade)
Definition
low potency typicals, quietapine, clozapine, olanzapine
Term
Postural hypotension
Definition
Quietapine, clozapine, low potency typicals
Term
Toxicity of antipsychotics
Definition
Tardive dyskinesia and neuroleptic malignant syndrome
Term
Neuroleptic malignant syndrome
Definition
Acute; muscle rigidity, fever, leukocytosis, AMS, myoglobinemia - treat with dantrolene and bromocriptine or ECT
Term
Other toxicities
Definition
Metabolic syndrome (olanzapine), cardiotoxicity (wide complex tachyarrythmias = Torsades de Pointes, ziprasidone and thioridazine); Seizure (all lower threshold!); hematologic (agranulocytosis - need a CBC!)
Term
Retinitis pigmentosa
Definition
Browning of the lens - thioridizine
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