[Different Uses of Home Blood Pressure Measurement in the Diagnosis and Monitoring of Hypertension]
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Objective: To find differences between measurements of clinical blood pressure and self-monitored home blood pressure measurement (HBPM).
Design: Descriptive study developed in a general population census.
Setting: Primary care.
Subjects: A total of 1411 subjects > or =18 years old were selected by stratified randomized sampling.
Methods: A skilled nurse made 3 clinical blood pressure (CBP) measurements, and trained patients or their relatives in HBPM, doing 12 in one day. CBP and HBPM employed an electronic device (OMRON 705CP).
Results: A total of 12 HBPM from 1184 subjects (52% women) were completed, with a mean age of 47.6 (SD, 17.2); 195 subjects were known to have hypertension. White-coat effect was diagnosed in 14.9% of subjects with normal pressure, 22.3% of hypertense patients treated and 57.6% of subjects with suspicion of isolated clinical hypertension. Possible isolated clinical hypertension was diagnosed in 10% of subjects without hypertension. White Coat normal pressure was found in 2.3% of untreated subjects and 4.7% of subjects with treated hypertension. 20.7% of subjects with hypertension poorly controlled in the clinic were considered pseudo-refractory (11.4% at the end of dosage interval). 77% of subjects conducted HBPM on their own and 89% thought it easy to do so.
Conclusion: Incorporation of HBPM into daily medical practice could avoid 20%-30% of possible mistakes in diagnosis and monitoring of hypertense patients.