Cardiovascular drug therapy in the elderly: theoretical and practical considerations

Related Experiment Videos

Bradley R Williams1, Jiwon Kim

  • 1School of Pharmacy, Andrus Gerontology Center, University of Southern California, Los Angeles, California 90089, USA. bradwill@usc.edu

Drugs & Aging
|April 25, 2003
PubMed

Insights

Managing cardiovascular disorders in older adults requires careful consideration of age-related physiological changes. Understanding altered pharmacokinetics and pharmacodynamics is crucial for effective pharmacotherapeutic strategies in the elderly.

Area of Science:

  • Gerontology
  • Cardiology
  • Clinical Pharmacology

Background:

  • The global elderly population is rapidly expanding, leading to a higher prevalence of cardiovascular disorders like hypertension and heart disease in this demographic.
  • Clinicians increasingly manage older adults with chronic cardiovascular conditions, necessitating long-term pharmacotherapeutic strategies.
  • Aging significantly alters cardiovascular function, impacting the pharmacokinetics and pharmacodynamics of cardiovascular medications.

Purpose of the Study:

  • To review the challenges and considerations in managing cardiovascular disorders in the elderly.
  • To highlight the effects of aging on cardiovascular physiology and drug action.
  • To discuss key pharmacotherapeutic agents used in older adults with cardiovascular conditions.

Main Methods:

  • Review of current literature on aging, cardiovascular disease, and pharmacotherapy.
  • Analysis of physiological changes associated with aging and their impact on drug behavior.
  • Examination of specific drug classes used in treating cardiovascular disorders in the elderly.

Main Results:

  • Physiological changes in aging alter cardiovascular function, affecting drug pharmacokinetics and pharmacodynamics.
  • Specific drug classes like ACE inhibitors, beta-blockers, and warfarin have unique considerations in older adults.
  • Beta-blockers can decrease cardiac output but are beneficial in heart failure; agents reducing angiotensin II activity offer benefits for hypertension and heart failure.

Conclusions:

  • Successful pharmacotherapeutic management of cardiovascular disorders in older adults necessitates a comprehensive understanding of aging-related physiological changes.
  • Tailoring medication choices requires careful consideration of altered pharmacokinetics, pharmacodynamics, and specific disease effects in the elderly.
  • Optimizing treatment outcomes involves selecting appropriate agents based on individual patient profiles and complex drug-disease interactions.

Related Concept Videos

Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution01:00

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution

Drug distribution in the human body is influenced by several factors, including plasma protein concentration, body composition, blood flow, tissue-protein concentration, and tissue fluid pH. Among these, changes in plasma protein concentration and body composition due to aging significantly affect how drugs are distributed within the body. Specifically, aging is associated with a decrease in albumin levels by about 10% and an increase in α1-acid glycoprotein levels. These alterations are not...
Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

Geriatric patients show significant variation in how their bodies process medications, which can change how effective and safe treatments are. The liver is the primary organ where drug metabolism occurs, involving two main types of chemical reactions: phase I and II. Phase I metabolism is driven by the cytochrome P450 enzyme system, which includes key types such as CYP3A, CYP2D6, and CYP2C9. Research indicates that while aging doesn't notably alter the levels or activity of these enzymes, it...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

In geriatric patients, renal physiology undergoes significant changes, including diminished renal blood flow and a lower glomerular filtration rate (GFR), leading to alterations in medication clearance. Drugs such as aminoglycoside antibiotics, lithium, and digoxin, which rely on glomerular filtration for removal from the body, particularly impact pharmacokinetics. These drugs tend to have slower clearance rates in older adults, necessitating careful dosage considerations.Evaluation of renal...