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Improved Renal Denervation Mitigated Hypertension Induced by Angiotensin II Infusion
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Percutaneous renal denervation and the second generation EnligHTN System.

R G Chokka1, S Delacroix, P J Psaltis

  • 1South Australian Health and Medical Research Institute Adelaide, SA, Australia - stephen.worthley@adelaide.edu.au.

Minerva Cardioangiologica
|February 7, 2014
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Summary

Renal denervation, a procedure to reduce kidney sympathetic nerve activity, effectively lowers blood pressure in patients with resistant hypertension. Newer multi-electrode catheters like EnligHTN offer improved lesion placement for better outcomes.

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Area of Science:

  • Nephrology
  • Cardiovascular Medicine
  • Interventional Cardiology

Background:

  • Hypertension is a significant public health issue, often requiring innovative treatments beyond medication.
  • Increased renal sympathetic nerve activity is a key factor in drug-resistant hypertension.
  • Renal denervation offers a potential interventional approach to manage resistant hypertension by reducing sympathetic drive.

Purpose of the Study:

  • To review the rationale behind renal artery denervation.
  • To discuss existing data and early technologies in renal denervation.
  • To focus on the characteristics and utility of the EnligHTN multi-electrode renal denervation catheter.

Main Methods:

  • Review of existing clinical trial data (Symplicity and EnligHTN trials).
  • Analysis of first and second-generation renal denervation catheter technologies.
  • Focus on the design and function of the EnligHTN multi-electrode catheter.

Main Results:

  • First and second-generation renal denervation catheters have demonstrated significant blood pressure reduction.
  • The EnligHTN catheter, a multi-electrode device, allows for pre-specified thermal injury patterns.
  • This design theoretically improves lesion positioning compared to earlier single-electrode systems.

Conclusions:

  • Renal denervation is a viable option for carefully selected patients with resistant hypertension.
  • Advancements in catheter technology, such as the EnligHTN device, aim to optimize treatment efficacy.
  • Further evaluation of multi-electrode systems like EnligHTN is warranted for resistant hypertension management.