Refractory arterial hypertension: important, but suboptimally characterized

Area of Science:

• Cardiology
• Nephrology
• Internal Medicine

Background:

• Refractory hypertension (HTN) represents a severe phenotype of antihypertensive therapy failure.
• It is characterized by uncontrolled blood pressure despite maximal therapy with multiple drugs, including thiazide-like diuretics and mineralocorticoid receptor antagonists.
• Existing definitions exhibit variability over time and across medical guidelines.

Purpose of the Study:

• To emphasize the high cardiovascular risk associated with refractory HTN.
• To analyze the evolution and consistency of refractory HTN definitions in guidelines.
• To identify potential shortcomings in current definitions and propose improvements.

Main Methods:

• Review and analysis of medical literature and clinical guidelines defining refractory hypertension.
• Comparative analysis of diagnostic criteria and treatment recommendations.
• Assessment of associated cardiovascular complications and comorbidities.

Main Results:

• Patients with refractory HTN face elevated risks of heart failure, left ventricular hypertrophy, and stroke compared to controlled resistant HTN.
• Hypertension-mediated organ damage, diabetes, and obstructive sleep apnea are more common in refractory HTN.
• Inconsistencies in definitions across guidelines suggest potential insufficiencies.

Conclusions:

• Refractory HTN is a critical clinical phenotype demanding precise definition and management.
• Standardization of diagnostic criteria is crucial for accurate risk assessment and effective treatment strategies.
• Further research is needed to refine definitions and optimize therapeutic approaches for refractory hypertension.