Hypertension is a major cardiovascular risk factor. Antihypertensive treatment can lower blood pressure (BP) levels and reduce the risk. In developed countries, the rate of BP control is improving and approaching the 70% of treated patients. Herewith we report the results of an observational study of hypertensive outpatients carried out by an ambulatory nephrology unit dedicated to hypertension.Design and method:
A total of 740 consecutive patients attended our ambulatory nephrology unit dedicated to hypertension from 1 January to 31 December 2015. In agreement with the current guidelines, hypertension was defined as sitting BP levels equal or higher than 140/90 mmHg and/or use of antihypertensive drugs. Having excluded 87 patients who did not meet these criteria, 653 patients (mean age: 59.6 years; 367 females, 266 males) remained and constituted the eligible sample for the present analysis. In them, the following parameters were assessed: age, sex, body-mass index (BMI), waist circumference, BP levels both in the sitting and in the standing position, renal function, serum glucose, glycosylated haemoglobin, lipid profile, antihypertensive drugs prescribed. In addition, other investigations (electrocardiogram, echocardiogram and funduscopy) were performed in order to search for asymptomatic organ damage (OD). Patients that had sitting BP levels equal or lower than 140/90 mmHg were considered as having achieved BP control.Results:
On the whole, 78.5% of our patients achieved BP control. Compared to patients whose BP was not controlled, those achieving the BP target were slightly younger (mean age: 59.33 vs 60.60 years) and showed a lower BMI (29.11 vs 31.08 kg/m2) and a higher glomerular filtration rate (86.23 vs 82.97 mL/min). Moreover, they were prescribed a lesser number of antihypertensive drugs (1.81 vs 2.11). No significant difference there was in comorbidities and OD, such diabetes mellitus, chronic kidney disease and left ventricular hypertrophy.Conclusions:
Under proper treatment, more than 78% of our hypertensive patients achieved BP control. This figure is higher than the objective of 70% of treated and controlled hypertensive patients set for 2015 in Europe.