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[Prevalence and mechanism of masked hypertension: the ol'mesures survey]
Rationale:
Masked hypertension (MH) and uncontrolled hypertension (UCH) have both bad prognosis. The influence of measurement circumstances on MH prevalence and reproducibility are little known.
Objective:
To evaluate the prevalence and reproducibility of MH after excluding confusing factors [method and time of blood pressure (BP) measurement, antihypertensive treatment] by a standardization procedure.
Methods:
2189 hypertensive patients (61+/- 12 years, men 57%) having been treated in monotherapy by an angiotensin II receptor inhibitor for at least 8 weeks Were evaluated in a French multicenter prospective observational survey. Three BP successive office measurements were performed by the GPs during 2 visits (V) at similar times 13 +/- 9 days apart (BP: V1 149 +/- 19 / 85 +/- 11 mmHg, V2 145 +/- 19/83 +/- 11 mmHg) and home BP self-measurements (HBPM) were performed morning and evening for 3 consecutive days (HBPM morning + evening : n=18 +/- 1; 142 +/- 16/81 +/- 9 mmHg) and at the time of the visit (daytime HBPM: n=9 +/- 1; 140 +/- 16/80 +/- 10 mmHg) by the patients (Omron-705CP).
Results:
[table: see text].
Conclusion:
the observed MH prevalence is similar to previous published studies and is independent of: treatment, BP measurement methods, measurements frequency and HBPM time but it depends on office BP values. Consequently, its reproducibility is directly dependent of the quality of office BP measurements.
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