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- W4246827095 abstract "Drug therapy for individuals of any age is difficult but prescribing for older patients offers special challenges. Older people take about three times as many prescription medications as younger individuals do, mainly because of their increased prevalence of chronic medical conditions. However, taking several drugs together substantially increases the risk of drug interactions, unwanted effects, and adverse reactions. Many medications need to be used with special caution because of age-related changes in pharmacokinetics and pharmacodynamics. For some drugs, an increase in the volume of distribution (eg, diazepam) or a reduction in drug clearance (eg, digoxin) may lead to higher plasma concentrations in older than in younger patients. Pharmacodynamic changes with ageing may result in an increased sensitivity to the effects of certain drugs (eg, opioids) for any given plasma concentration. While a physician can usually do little to alter the characteristics of individual older patients to affect the kinetics or dynamics of drugs, the decision whether to prescribe anything at all, the choice of drug, and the manner in which it is to be used (eg, dose and duration of therapy) are all factors that are under control of the prescriber. Patient adherence to the regimen prescribed is important, and there should be a partnership between physician and patient in therapeutic decision making. We will discuss here ways of improving prescribing for older patients. Specifically, we will examine the scarcity of information to guide prescribing decisions, the general principles of prudent prescribing, and the opportunities to clarify and expand knowledge about drug therapy in the elderly." @default.
- W4246827095 created "2022-05-12" @default.
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- W4246827095 date "1995-07-01" @default.
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- W4246827095 title "Drug therapy" @default.
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- W4246827095 doi "https://doi.org/10.1016/s0140-6736(95)92656-9" @default.
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