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Microalbuminuria in essential hypertension

Journal of Human Hypertension volume 16, pages S74–S77 (2002)Cite this article

Abstract

Microalbuminuria (urinary albumin excretion equal to 30–300 mg/24 h) is a reliable indicator of premature cardiovascular mortality in diabetic patients and in the general population. In insulin-dependent and non-insulin-dependent diabetes mellitus microalbuminuria is a marker of initial diabetic nephropathy and predicts the evolution toward renal insufficiency. In essential hypertension the clinical and prognostic role of microalbuminuria is more controversial. While it is a recognised marker of cardiovascular complications and a reliable predictor of ischaemic heart disease, its prognostic value on the risk of progressive renal alterations is still uncertain because no prospective studies, taking microalbuminuria as a selection criterion and renal insufficiency as an end point, are available. Blood pressure control with antihypertensive drugs is accompanied by a reduction in urinary albumin excretion. The favourable effects of antihypertensive agents on microalbuminuria appear to be proportional to blood pressure reduction, but angiotensin-converting enzyme inhibitors and angiotensin-II-receptor antagonists show an additional beneficial effect on urinary albumin excretion. Whether the reduction of microalbuminuria obtained through pharmacological intervention has favourable prognostic implications remain to be demonstrated. However, screening for microalbuminuria is a relatively easy and inexpensive procedure and reveals a potentially treatable abnormality. Thus, considering that microalbuminuria identifies hypertensive subjects at higher risk than standard, urinary albumin excretion should be routinely measured in hypertensive patients and, in the presence of microalbuminuria, antihypertensive treatment should be intensified in order to obtain an optimal blood pressure control.

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  1. Department of Internal Medicine, Hypertension Unit, Civil Hospital, Via Taverna 49, Piacenza, 29100, Italy

    G Crippa

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  1. G Crippa
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Correspondence to G Crippa.

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Crippa, G. Microalbuminuria in essential hypertension. J Hum Hypertens 16 (Suppl 1), S74–S77 (2002). https://doi.org/10.1038/sj.jhh.1001348

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