Self-blood pressure (BP) measurement (SBPM) and ambulatory BP measurement (ABPM) are suitable for the isolated clinical hypertension (ICH) or 'white-coat' hypertension diagnosis. However, patients with ICH have a different cardiovascular risk according to the measurement technique used for the diagnosis.
Objective: To describe baseline cardiovascular risk of patients with hypertension and with ICH according to SBPM and daytime ABPM.
Methods: Six hundred and sixty-four newly diagnosed and never treated patients with hypertension and with an average age of 59.3 years (standard deviation=12.0) were included (52% men) in this study. Clinical data, analytical data with urinary albumin excretion rate, estimated glomerular filtration rate, retinography, SBPM, and ABPM were performed. Cardiovascular risk was estimated from the European Society of Hypertension and Systemic Coronary Risk Evaluation tables.
Results: ICH prevalence varies according to the ambulatory measurement technique used: SBPM=24.2%, daytime ABPM=8.1, and 5.2% if criteria are required from both techniques. In the 403 patients with hypertension and who had SBPM and ABPM, the percentage of patients with high or very high baseline cardiovascular risk, falls progressively from 31.2% of patients with sustained hypertension to 20.0% of patients with ICH measured using SBPM, to 15.1% of patients with ICH measured using ABPM-day and to 9.5% of patients who present ICH using both techniques (P<0.005 for trend).
Conclusion: The baseline results show that patients with hypertension and with ICH using SBPM and daytime ABPM are those who have a lower baseline cardiovascular risk and allow ICH to be defined on the basis of normal ambulatory readings using both techniques.