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Resistant hypertension: an overview

F A McAlister1, R Z Lewanczuk, K K Teo

  • 1Division of General Internal Medicine, University of Alberta Hospital, Edmonton. finlay@ceu.uottawa.ca

The Canadian Journal of Cardiology
|September 1, 1996
PubMed
Summary
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Resistant hypertension is a significant public health issue. Effective management involves identifying contributing factors and tailoring treatment, with third-line agents showing similar efficacy but varying based on patient profiles.

Area of Science:

  • Cardiology
  • Nephrology
  • Public Health

Background:

  • Resistant hypertension is a common and serious condition, increasing the risk of cardiovascular events and organ damage.
  • Numerous factors contribute to treatment resistance, including lifestyle, secondary causes, and medication issues.

Purpose of the Study:

  • To review factors contributing to treatment resistance in hypertension.
  • To assess evidence from therapeutic trials for resistant hypertension management.

Main Methods:

  • MEDLINE search for 'resistant hypertension', 'refractory hypertension', and 'treatment resistance, hypertension'.
  • Bibliography screening of identified articles for relevant literature.
  • Review of English-language articles on epidemiology, prognosis, and management.

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Main Results:

  • Resistant hypertension is a major public health concern, often requiring specialized care.
  • Contributing factors include misdiagnosis, noncompliance, secondary causes, lifestyle, and suboptimal drug combinations.
  • Beta-blockers and thiazide diuretics reduce cardiovascular risk; third-line agents offer additional blood pressure lowering with no significant differences in efficacy or tolerability.

Conclusions:

  • Patient evaluation for resistant hypertension requires ambulatory blood pressure monitoring and assessment for end-organ damage.
  • Treatment decisions should be guided by identifying contributing factors and using stepped care.
  • Third-line agent selection depends on the patient's renin profile, current medications, and comorbidities.