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(Hypertension. 2005;45:586.)
© 2005 American Heart Association, Inc.

Original Articles

Elevated Pulse Pressure Is Associated With Low Renal Function in Elderly Patients With Isolated Systolic Hypertension

Jacobien C. Verhave; Pierre Fesler; Guilhem du Cailar; Jean Ribstein; Michel E. Safar; Albert Mimran

From the Department of Internal Medicine (J.C.V., P.F., G.d.C., J.R., A.M.), CHU Montpellier, France; Diagnosis Center (M.E.S.), Hôtel-Dieu Hospital, Paris, France.

Correspondence to A. Mimran, Department of Internal Medicine, Hôpital Lapeyronie, 34295 Montpellier Cedex 5, France. E-mail amimran{at}wanadoo.fr

In the past decade, pulse pressure has emerged as a strong predictor of cardiovascular morbidity and mortality. During aging, elevation of pulse pressure is a consequence of stiffening of the arterial wall. The relationship between pulse pressure and the renal aging process was studied in a cohort of 212 patients with never-treated isolated systolic hypertension. Glomerular filtration rate and effective renal plasma flow were measured using constant infusion of technetium 99m (^99mTc)-DTPA and ¹³¹I-ortho-iodohippurate, respectively, and timed urine collections. The relationship between pulse pressure and renal function was studied using a linear regression model in the total population and in 40 to 49, 50 to 59, and 60 years and older age categories. In the whole population, there was an inverse relationship between pulse pressure and glomerular filtration rate; however, this relation did not persist after adjustment for age. In fact, the inverse relationship between pulse pressure and glomerular filtration rate was only present in patients 60 years of age or older. This relationship in elderly patients remained after adjustment for age, gender, MAP, and cardiovascular risk factors (P=0.006). It is suggested that pulse pressure, a marker of arterial stiffening, may have a detrimental influence on the age-related decline in glomerular filtration rate, after 60 years of age in patients with never-treated isolated systolic hypertension.

Key Words: age • glomerular filtration rate • hypertension • pulse

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