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(Hypertension. 2001;38:958.)
© 2001 American Heart Association, Inc.

Fourth Workshop on Structure and Function of Large Arteries

Conventional Antihypertensive Drug Therapy Does Not Prevent the Increase of Pulse Pressure With Age

Jean-Jacques Mourad; Jacques Blacher; Patrick Blin; Ursula Warzocha; on behalf of the investigators of the PHASTE study^*

From the Department of Internal Medicine, St Michel Hospital (J.J.M., U.W.); the Department of Internal Medicine, Broussais Hospital (J.B.); and ICARE (P.B.), Paris, France.

Reprint requests to Dr Jean-Jacques Mourad, Department of Internal Medicine, St Michel Hospital, 33 rue Olivier de Serres, 75015 Paris, France. E-mail jean-jacques.mourad{at}hopital-saint-michel.org

Abstract

Abstract—— Increased pulse pressure (PP), an independent predictor of cardiovascular risk, may be quantified on the basis of the prevalence of isolated systolic hypertension (ISH) in the population at large. The purpose of this study was to estimate the prevalence of ISH and its relation to age and drug therapy in a large group of outpatient hypertensive subjects in France. Between March and December 1999, 2975 French general practitioners included 17 716 consecutive patients with uncontrolled hypertension (systolic blood pressure [SBP] >140 mm Hg and/or diastolic blood pressure [DBP] >90 mm Hg), either treated or not treated. They were asked to complete a questionnaire concerning associated cardiovascular risk factors and ongoing antihypertensive therapy. Subjects were classified according to 5 age ranges (from 18 to 103 years). In each age range, SBP, DBP, mean blood pressure, and PP were significantly lower (P<0.001) in treated subjects than in untreated subjects, with the exception of PP in subjects >75 years. The latter finding resulted from a significant increase of SBP and PP with age, together with a significant lowering of DBP with age, irrespective of drug treatment. Subsequently, the prevalence of ISH increased with age from 20.4% to 35.2% in men and women. In any given age range, drug therapy for hypertension is associated with marginally lower values of PP. In the studied populations, the increase of PP with age is independent of gender and of the presence of antihypertensive drug treatment, leading to an increased prevalence of ISH and a subsequent increase of cardiovascular risk with age.

Key Words: hypertension, essential • antihypertensive therapy • blood pressure • pulse

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