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Saudi Journal of Kidney Diseases and Transplantation
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ORIGINAL ARTICLE Table of Contents   
Year : 2006  |  Volume : 17  |  Issue : 3  |  Page : 326-337
High Prevalence of Masked Hypertension in Treated Hypertensive Patients with Type 2 Diabetes Mellitus


1 Department of Medicine, King Saud University, Riyadh, Saudi Arabia
2 Samuel Lunenfeld Research Institute at Mount Sinai Hospital, Toronto, Ontario, Canada
3 Medical Student, University of Western, Toronto, Ontario, Canada
4 Department of Medicine, University of Toronto, Toronto, Ontario, Canada

Correspondence Address:
Abdulkareem Alsuwaida
Department of Medicine, King Saud University, P.O.Box 2925, Riyadh 11461
Saudi Arabia
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PMID: 16970252

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This study was undertaken to determine whether self-measured home blood pressure (BP) readings were comparable to clinic visit BP readings in hypertensive type II diabetic patients. We measured the BP of 27 hypertensive patients at home and during the clinic visits over a three week period. The BP readings were analyzed using a mixed linear model with mean daytime ambulatory measure as a covariate. We found that, although there was no significant difference in the mean systolic BP between home and clinic readings (0.6 mm Hg), the mean home BP readings were significantly higher (difference = 6.8 mm p<0.0006). The proportion of masked hypertension, defined as elevated home systolic or diastolic BP (or both) values despite normal clinic visit BP values, was 40.7%. Three diastolic and one systolic BP measurement at home achieved a reliability coefficient of 0.8. Self-measurement of BP gave highly reliable readings when they were compared with blind readings taken by a trained professional using a mercury sphygmomanometer. We conclude that self-measured BP at home identifies a high prevalence of masked hypertension in treated hypertensive type 2 diabetic patients and that it represents a valuable management adjunct to ensure maximum benefit from antihypertensive drug therapy.


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