Renal revascularization in resistant hypertension.

Area of Science:

• Cardiovascular Medicine
• Interventional Cardiology
• Nephrology

Background:

• Renal artery stenosis (RAS) is a frequent cause of secondary and resistant hypertension (HTN).
• Previous trials comparing renal artery stenting to medical therapy have not demonstrated a significant benefit.
• These trials may have excluded patients with the most severe RAS, who could potentially benefit from intervention.

Purpose of the Study:

• To review patient selection strategies for renal artery stenting in RAS.
• To discuss methods for minimizing procedural complications.
• To explore techniques for achieving durable patency after renal stenting.

Main Methods:

• Review of existing literature and guidelines, including ACC/AHA guidelines and SCAI Appropriate Use Criteria.
• Emphasis on hemodynamic assessment for moderate (50%-70%) RAS lesions due to limitations of conventional angiography.
• Discussion of techniques for optimizing patient selection, procedural safety, and long-term stent patency.

Main Results:

• Hemodynamic assessment is crucial for evaluating moderate RAS lesions.
• Optimized patient selection and procedural techniques are key to successful renal stenting.
• Focus on specific patient subgroups who may derive benefit from intervention.

Conclusions:

• Renal artery stenting may be beneficial for carefully selected patients with severe RAS.
• Accurate hemodynamic assessment is vital for identifying suitable candidates.
• Adherence to current guidelines and appropriate use criteria is recommended.