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Microalbuminuria in essential hypertension.

S Ljungman1

  • 1Department of Nephrology, Sahlgrenska Hospital, University of Gothenburg, Sweden.

American Journal of Hypertension
|December 1, 1990
PubMed
Summary

Microalbuminuria, a marker of early kidney damage, is common in hypertension and linked to higher cardiovascular risk. Further research is needed to confirm if it predicts kidney decline in hypertensive patients.

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Area of Science:

  • Nephrology
  • Cardiology
  • Hypertension Research

Background:

  • Clinically apparent proteinuria in essential hypertension signifies increased mortality and is a risk factor for cardiovascular and cerebrovascular diseases.
  • Subclinical microalbuminuria (30-300 mg/24 h urinary albumin excretion) is more frequent than clinical proteinuria in hypertension and correlates with blood pressure.
  • Increased urinary albumin excretion in hypertension may stem from renal hemodynamic changes, altered glomerular permselectivity, and structural changes due to nephrosclerosis.

Purpose of the Study:

  • To investigate the role of microalbuminuria as a predictor of proteinuria and renal function decline in essential hypertension.
  • To explore microalbuminuria as a potential marker of increased cardiovascular risk in hypertensive individuals.

Main Methods:

  • The study reviews existing evidence on microalbuminuria and its association with hypertension.
  • Analysis of factors contributing to increased urinary albumin excretion in hypertensive patients.
  • Comparison of microalbuminuria's predictive value in hypertension versus diabetes mellitus.

Main Results:

  • Microalbuminuria is a known risk factor for proteinuria, renal failure, and cardiovascular mortality in diabetes mellitus.
  • Evidence suggests microalbuminuria may serve as a marker for increased cardiovascular risk in hypertensive patients.
  • The predictive value of microalbuminuria for proteinuria and renal function decline in hypertension remains under investigation.

Conclusions:

  • Microalbuminuria is frequently observed in essential hypertension and is associated with elevated blood pressure.
  • While established as a risk factor in diabetes, its role in predicting renal and cardiovascular outcomes in hypertension requires further elucidation.
  • Microalbuminuria may indicate heightened cardiovascular risk in hypertensive individuals, warranting closer monitoring.

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