Prevalence and Factors Associated With Resistant Hypertension in a Large Health Maintenance Organization in Israel
- 1 September 2014
- journal article
- research article
- Published by Ovid Technologies (Wolters Kluwer Health) in Hypertension
- Vol. 64 (3), 501-507
- https://doi.org/10.1161/hypertensionaha.114.03718
Abstract
Previous assessments of the prevalence of resistant hypertension (RH) in uncontrolled blood pressure (BP) have ranged from 3% to 30%. Using real-world data, our aim was to estimate the prevalence of RH in patients belonging to the Maccabi Healthcare Services, a 2-million-member health organization in Israel. From 2010 to 2011, all hypertensive patients with ≥2 recorded BP measurements during a minimum period of 6 months were identified. Patients were considered uncontrolled if their most recent BP during the study period and their mean systolic BP or diastolic BP during a preceding period of ≥6months were systolic BP ≥140 mm Hg or diastolic BP ≥90 mm Hg, or systolic BP ≥130 mm Hg or diastolic BP ≥80 mm Hg in chronic kidney disease or diabetes mellitus. Uncontrolled patients taking diuretics and ≥2 antihypertensive therapy classes at their maximal recommended dose were regarded as resistant hypertensives. A total of 172 432 patients were eligible for the study. Uncontrolled BP was found in 35.9% (n=65 710). Overall, 2.2% of the uncontrolled patients (n=1487) were resistant hypertensives. Patients with RH were characterized by a significantly (P<0.01) older age, higher body mass index, and multicomorbidity (including dyslipidemia, diabetes mellitus, and impaired renal function) compared with patients with controlled hypertension receiving equivalent treatment. The results of this large population-based study indicate a substantially lower prevalence of RH than previously reported. Most patients with uncontrolled BP took less than the maximal recommended antihypertensive treatment.Keywords
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