Clinical Pharmacokinetics in the Elderly
Abstract
Clinical response to medication in an individual patient is the net result of the interaction of a number of complex processes. These processes can be categorized into two broad areas: those affecting pharmacokinetics or the relationship between the administered dose and the concentrations of the drug in the systemic circulation, and those affecting pharmacodynamics or the relationship between concentrations of the drug in the systemic circulation and the observed pharmacologic response. Absorption, distribution, metabolism, and excretion of a drug determine its pharmacokinetics. Drug-receptor interactions, concentrations of the drug at the receptor, and homeostatic compensatory mechanisms determine a drug’s pharmacodynamics. Pharmacokinetics and pharmacodynamics are affected by a number of patient-specific factors including age, sex, ethnicity, genetics, disease processes, and prior and present drug exposure. This chapter focuses on the effects of advanced age on pharmacokinetics.
Keywords
Hepatic Metabolism Hepatic Blood Flow Vinca Alkaloid Hepatic Drug Metabolism Hepatic Enzyme ActivityPreview
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