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Around-the-clock Ambulatory Blood Pressure Monitoring is Required to Properly Diagnose Resistant Hypertension and Assess Associated Vascular Risk

  • Resistant Hypertension (E Pimenta, Section Editor)
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Abstract

Diagnosis of resistant hypertension (RH) is currently based upon awake-time office blood pressure (BP). An increasing number of studies have documented abnormally elevated sleep-time BP in most RH patients, indicating that diagnosis of true RH cannot be determined solely by comparison of office BP with either patient awake-time BP self-measurements or awake-BP mean from ambulatory monitoring (ABPM), as is customary in the published literature. Moreover, the ABPM-determined sleep-time BP mean is an independent and stronger predictor of cardiovascular and cerebrovascular disease (CVD) risk than either daytime office/ABPM-derived awake or 24-hour means. Results of the recently completed MAPEC (Monitorización Ambulatoria para Predicción de Eventos Cardiovasculares) prospective outcomes study, which included a large cohort of RH patients, established that time of treatment relative to circadian rhythms constituted a critically important yet often neglected variable with respect to BP control. The study found that bedtime versus morning ingestion of the full dose of ≥1 BP-lowering medications resulted in both better therapeutic normalization of sleep-time BP and reduced CVD morbidity and mortality, including in RH patients. Accordingly, ABPM is highly recommended to properly diagnose and manage true RH, with a bedtime hypertension medication regimen as the therapeutic scheme of choice.

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Acknowledgments

Research was supported by unrestricted grants from Ministerio de Ciencia e Innovación, Spanish Government (SAF2009-7028-FEDER); Consellería de Economía e Industria, Xunta de Galicia (09CSA018322PR); Consellería de Cultura, Educación e Ordenación Universitaria, Xunta de Galicia (CN2012/251); European Regional Development Fund (ERDF) and the Galician Regional Government under agreement for funding the Atlantic Research Center for Information and Communication Technologies (AtlantTIC); Spanish Government and the European Regional Development Fund (ERDF) under project TACTICA; and Vicerrectorado de Investigación, University of Vigo.

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Ramón C. Hermida, Diana E. Ayala, María T. Ríos, José R. Fernández, Artemio Mojón, and Michael H. Smolensky each declare that they have no conflict of interest.

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This article does not contain any studies with human or animal subjects performed by any of the authors.

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Correspondence to Ramón C. Hermida.

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This article is part of the Topical Collection on Resistant Hypertension

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Hermida, R.C., Ayala, D.E., Ríos, M.T. et al. Around-the-clock Ambulatory Blood Pressure Monitoring is Required to Properly Diagnose Resistant Hypertension and Assess Associated Vascular Risk. Curr Hypertens Rep 16, 445 (2014). https://doi.org/10.1007/s11906-014-0445-9

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