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The diagnosis and treatment of hypertensive crises

Joseph Varon1

  • 1The University of Texas Health Science Center at Houston, Houston, TX, USA. joseph.varon@uth.tmc.edu

Postgraduate Medicine
|January 31, 2009
PubMed

Insights

Hypertensive crises require prompt BP reduction, with immediate IV treatment for emergencies and oral agents for urgencies. Newer agents like clevidipine offer advantages over toxic older drugs in managing hypertensive crises.

Area of Science:

  • Cardiology
  • Nephrology
  • Emergency Medicine

Background:

  • Hypertension (HTN) affects millions, with hypertensive crises defined by severe blood pressure (BP) elevation (>180/120 mm Hg).
  • Hypertensive crises are classified as emergencies (with end-organ damage) or urgencies (without).
  • The main goal is safe BP reduction, with immediate intervention critical for hypertensive emergencies.

Purpose of the Study:

  • To differentiate hypertensive emergencies from urgencies based on BP levels and end-organ damage.
  • To outline appropriate treatment strategies for hypertensive crises, emphasizing timely BP reduction.
  • To evaluate the efficacy and safety of various intravenous (IV) antihypertensive agents.

Main Methods:

  • Review of existing literature on hypertensive crisis management.
  • Categorization of hypertensive crises into emergencies and urgencies.
  • Analysis of available rapid-acting IV antihypertensive agents for efficacy and toxicity.

Main Results:

  • Hypertensive emergencies necessitate immediate BP reduction with titratable IV agents in an ICU setting.
  • Hypertensive urgencies are typically managed with oral antihypertensive medications.
  • Clevidipine is highlighted as a newer agent with advantages, while sodium nitroprusside, nifedipine, nitroglycerin, and hydralazine are associated with significant toxicities and are not recommended as first-line therapies.

Conclusions:

  • Effective management of hypertensive crises hinges on accurate diagnosis and appropriate BP reduction strategies.
  • Intravenous agents like clevidipine are preferred for hypertensive emergencies due to efficacy and safety profiles.
  • Avoiding toxic agents like sodium nitroprusside is crucial for optimal patient outcomes in hypertensive emergencies.

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