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Severe Hypertension: Evaluation and Treatment

Robert L Gauer1, Adam I Rifaat2, Daniel R Blankinship3

  • 1Department of Internal Medicine at Womack Army Medical Center, Fort Bragg, North Carolina.

American Family Physician
|May 27, 2026
PubMed

Insights

Severe hypertension in US adults is common, often caused by medication nonadherence in outpatients. Inpatient treatment of severe hypertension may increase risks without improving outcomes, necessitating careful evaluation.

Area of Science:

  • Cardiology
  • Internal Medicine
  • Public Health

Background:

  • Hypertension affects nearly half of US adults, with severe elevations (≥180/110 mm Hg) seen in over 13% of those with existing hypertension.
  • Severe hypertension, defined as blood pressure ≥180/110 mm Hg without new or worsening target organ damage, lacks clear outpatient management guidelines.
  • Medication nonadherence is the primary cause of severe hypertension in the outpatient setting.

Purpose of the Study:

  • To review current understanding and management strategies for severe hypertension.
  • To differentiate between outpatient and inpatient management of severe hypertension.
  • To highlight risks associated with inpatient treatment and criteria for evaluating secondary hypertension.

Main Methods:

  • Review of existing guidelines for chronic hypertension management.
  • Analysis of randomized and observational trials on inpatient treatment of severe hypertension.
  • Discussion of common causes and recommended approaches for outpatient severe hypertension.

Main Results:

  • Outpatient severe hypertension often requires adjusting or reinitiating antihypertensive therapy, with emphasis on out-of-office monitoring and adherence.
  • Inpatient treatment of severe hypertension does not improve short-term outcomes and may elevate risks of cardiovascular events, acute kidney injury, and prolonged hospitalization.
  • Short-acting or intravenous antihypertensive agents in hospitalized patients are linked to adverse outcomes.

Conclusions:

  • Management of severe hypertension requires addressing outpatient nonadherence and carefully considering the risks versus benefits of inpatient interventions.
  • Evaluation for secondary hypertension is crucial in specific patient groups, including those with resistant hypertension or early-onset disease.
  • Current evidence does not support routine inpatient treatment for severe hypertension without target organ damage.

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