Renal Sympathetic Denervation: Hibernation or Resurrection?

Area of Science:

• Cardiovascular Medicine
• Interventional Cardiology
• Nephrology

Background:

• Renal sympathetic nerves play a key role in blood pressure and volume regulation.
• Historical and experimental data support renal denervation's efficacy in lowering blood pressure.
• Minimally invasive techniques have emerged for managing drug-resistant hypertension.

Purpose of the Study:

• To review the anatomical and physiological basis of renal sympathetic denervation.
• To critically evaluate past and current knowledge in the field.
• To discuss the future of renal denervation and research directions.

Main Methods:

• Review of anatomical, physiological, and pathophysiological data.
• Analysis of historical surgical sympathectomy and renal denervation studies.
• Evaluation of clinical trial data, including the SYMPLICITY 3 trial.

Main Results:

• Early studies showed significant blood pressure reduction and benefits in target organ damage.
• The SYMPLICITY 3 trial's failure to meet its primary endpoint caused significant concern.
• The field of renal denervation experienced a period of reduced activity following trial results.

Conclusions:

• Renal sympathetic denervation has a strong scientific rationale for treating hypertension.
• Further research and refined techniques are needed to overcome past challenges.
• The future of renal denervation may involve patient selection and improved procedural approaches.