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J Hum Hypertens. 2000 Aug;14(8):525-9.

Effect of antihypertensive treatment on office and self-measured blood pressure: the Autodil study.

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Hypertension Clinic, Erasme University Hospital, Brussels, Belgium.



To examine prospectively the effects of antihypertensive therapy on office blood pressure (BP) and home BP, in a large-scale hypertensive population followed by their general practitioners.


A total of 760 hypertensive patients either never treated or after a 2-week washout period, aged 18-75 years, with a diastolic office BP between 95 and 110 mm Hg and a systolic office BP below 180 mm Hg.


Patients measured their BP at home using an automated printer-equipped oscillometric device (OMRON-HEM 705 CP) twice daily for 8 days before the visit to their general practitioner who recorded three office BP. These measurements were performed before and after 8 weeks of antihypertensive therapy with sustained-release diltiazem 300 mg once daily.


Diltiazem reduced systolic and diastolic office BP and home BP and heart rate (P < 0.01). Systolic and diastolic office BP were higher than home BP before (P < 0.01) but not during treatment. Correlation coefficients between the two methods before and during therapy were 0.6 and 0.7 for systolic BP and 0.4 and 0.6 for diastolic BP (P < 0. 01). Both methods did not agree equally throughout the range of BP: home BP was higher than office BP for high values and lower for low values.


The results show that BP measured at home by patients can be higher than office BP in the highest range of BP. Journal of Human Hypertension (2000) 14, 525-529

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