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A study on oliguric standard in the elderly

Z Jian1, Z Han, H Wu

  • 1Department of Geriatrics, Second Affiliated Hospital, Hunan Medical University, Changsha.

Chinese Medical Journal
|November 1, 1995
PubMed
Summary
This summary is machine-generated.

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Healthy elderly individuals require specific daily urine volumes to excrete metabolic waste. Males need at least 926 ml/d and females 708 ml/d to prevent internal environment disorders.

Area of Science:

  • Nephrology
  • Gerontology
  • Internal Medicine

Background:

  • Adequate hydration is crucial for kidney function, especially in the elderly.
  • Understanding renal waste excretion capacity is vital for maintaining homeostasis in aging populations.

Purpose of the Study:

  • To determine the minimal essential daily urine volume for healthy elderly males and females.
  • To establish oliguric standards for the elderly to prevent metabolic disturbances.

Main Methods:

  • A water deprivation test was conducted on 44 healthy elderly participants (26 males, 18 females) for 25 hours.
  • Maximal renal concentrating function and 24-hour renal waste excretion were measured.

Main Results:

  • Maximal renal concentration was approximately 887 mmol/L for males and 888 mmol/L for females.

Related Experiment Videos

  • Estimated minimal essential daily urine volume was 926 ml for males and 708 ml for females.
  • Renal waste excretion was 815 mmol/d for males and 620 mmol/d for females.

    • Conclusions:

    • Elderly males require less than 926 ml/d and females less than 708 ml/d of urine to excrete daily metabolic products.
    • Urine volume below these thresholds can lead to internal environment disorders in the elderly.
    • These findings provide critical oliguric standards for geriatric care and hydration management.