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5 Cards in this Set
- Front
- Back
Age-Related Changes in Pharmacokinetics: Absorption, Distribution, Hepatic Metabolism, Renal Excretion
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1. Absorption: no significant changes
2. Distribution: increased Vd lipophilic drug (increased fat), decreased Vd hydrophilic drug (decreased water), decreased binding acidic drugs/increased free drug (decreased albumin), increased binding of basic drugs (increased alpha-1-glycoprotein) 3. Hepatic Metabolism: decreased phase I reactions (build-up of active metabolites), no change in phase II reactions 4. Renal Excretion: reduced by 30-50% |
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Age-Related Changes in Pharmacodynamics: Increased Sensitivity, Decreased Sensitivity
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1. Increased Sensitivity: sedative hypnotics, anticholinergics, analgesics, warfarin
2. Decreased Sensitivity: beta-adrenergic stimulants and blockers, alpha-adrenergic stimulants |
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Age-Related Changes in Adverse Drug Reactions: Increased Risk Factors, Unique Presentation
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1. Increased Risk Factors: # of medications, comorbidities >6, Low BMI, age >85, impaired renal function
2. Unique Presentation: delerium, falls, fractures, urinary incontenence/retention, fecal incontenence/constipation, orthostatic hypotension, renal impairment |
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Is Adherence/Compliance to Medications Different in Elderly?
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No
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Adverse Effects in Neuroleptics: Sedation, Anticholinergic, Orthostasis, Extrapyramidal
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1. Sedation: Olanzapine>Quetiapine>Resperidone
2. Anticholinergic: Olanzapine>Quetiapine 3. Orthostasis: Resperidone>Quetiapine 4. Extrapyramidal: Haloperidol>Resperidone |