Background In large-scale surveys of individuals with hypertension those whose clinic blood pressure is reduced to 140/90 mm Hg or less have been found to represent only a small fraction of the hypertensive population.
We assessed whether these results arise because of a white-coat effect elevating clinic blood pressure.
Methods We randomly selected 2400 individuals from the town of Monza, Italy, and invited them to take part in our study.
We measured clinic blood pressure as well as home (morning and evening measurements), and 24 h ambulatory blood pressure-ie, blood pressures largely devoid of a white-coat effect.
Based on clinic blood pressure participants were then classified as normotensive, untreated hypertensive (clinic blood pressure>140 mm Hg systolic and/or>90 mm Hg diastolic), or treated hypertensive (having antihypertensive treatment).
The mean blood pressures for each group were calculated.
Findings 1651 people took part in the study.
The clinic blood pressure of treated hypertensives (n=207 ; 146.9 [SD 18] mm Hg/90.2 [8.6] mm Hg) was only slightly less than in untreated hypertensives (n=402 ; 148 [15.2] mm Hg/93.3  mm Hg) and in both groups the blood pressure values were much greater than those of normotensive individuals (n=1042 ; 119.5 [10.3] mm Hg/78.1 [6.6] mm Hg) p<0.001. (...)
Mots-clés Pascal : Hypertension artérielle, Pression sanguine, A domicile, Ambulatoire, Mesure, Evaluation, Classification, Homme, Italie, Europe, Appareil circulatoire pathologie, Hémodynamique
Mots-clés Pascal anglais : Hypertension, Blood pressure, At home, Ambulatory, Measurement, Evaluation, Classification, Human, Italy, Europe, Cardiovascular disease, Hemodynamics
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0171260
Code Inist : 002B12B05B. Création : 21/05/1997.