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Changes in renal function with aging. Implications for treatment.

R D Lindeman1

  • 1Department of Medicine, University of New Mexico School of Medicine, Albuquerque.

Drugs & Aging
|September 1, 1992
PubMed
Summary
This summary is machine-generated.

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As people age, kidney function declines, particularly glomerular filtration rate (creatinine clearance). Monitoring this is crucial for accurate drug dosage adjustments in older adults.

Area of Science:

  • Nephrology
  • Geriatric Medicine
  • Pharmacology

Background:

  • Aging is associated with a decline in renal function, primarily glomerular filtration rate (GFR).
  • GFR is a critical parameter for assessing kidney health and guiding drug therapy.
  • Other renal functions often decrease in parallel with GFR, simplifying dosage adjustments.

Purpose of the Study:

  • To highlight the importance of glomerular filtration rate (creatinine clearance) in monitoring renal function in aging individuals.
  • To emphasize the necessity of adjusting drug dosages based on GFR changes.
  • To explain the implications of stable serum creatinine levels despite declining GFR.

Main Methods:

  • Review of physiological changes in renal function with aging.

Related Experiment Videos

  • Analysis of the relationship between GFR, other renal functions, and drug dosage decisions.
  • Discussion of the impact of decreasing muscle mass on serum creatinine levels.

    • Main Results:

    • Mean creatinine clearance decreases by approximately 1% per year with aging.
    • There is increasing variability in creatinine clearance among older individuals.
    • Serum creatinine concentrations may remain stable due to parallel decreases in muscle mass and creatinine excretion.

    Conclusions:

    • Glomerular filtration rate (creatinine clearance) is the key indicator of renal function in the elderly.
    • Drug dosage adjustments should primarily rely on GFR estimations.
    • Clinicians must be aware that stable serum creatinine levels do not necessarily reflect preserved renal function.