HFS-guided Renal Ablation for Improving Outcome of Renal Denervation Procedure

November 19, 2015 updated by: Meshalkin Research Institute of Pathology of Circulation

High Frequency Guided Renal Artery Denervation for Improving Outcome of Renal Ablation Procedure

To increase the number of responders using HFS-guided renal artery denervation (RDN) in patients with resistant and moderate resistant hypertension

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Anticipated)

170

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Russian Federation
      • Krasnoyarsk, Russian Federation
        • Federal Center of Cardiovascular surgery
      • Krasnoyarsk, Russian Federation
        • Regional Hospital
      • Moscow, Russian Federation
        • Federal Center of Prophylactic Medicine

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Office-based systolic blood pressure of ≥140/90 mm Hg and <160/100 mm Hg (moderate resistant hypertension) or ≥160/100 mm Hg (severe resistant hypertension), despite treatment with 3 antihypertensive drugs (including a diuretic).
  • A glomerular filtration rate ≥45 mL/min/1⋅73 m2, with modification of diet using a renal disease formula.

Exclusion Criteria:

  • Secondary causes of hypertension
  • Severe renal artery stenosis or dual renal arteries
  • Congestive heart failure
  • Left ventricular ejection fraction <35%
  • Previous renal artery stenting or angioplasty
  • Type 1 diabetes mellitus

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Group 1 (RDN guided by HFS)

Renal arteries were assessed for suitability of ablation by renal angiography. The real-time 3-dimensional aorta-renal artery maps were reconstructed with the use of navigation system and ablation catheter via femoral artery access. After that high-frequency stimulation (HFS) was used before the initial and after each radiofrequency (RF) delivery within the renal artery. RDN was considered to have been achieved when the sudden increase of blood pressure (> 15 mm Hg from invasive arterial monitoring) was eliminated in response to HFS.

RF ablations of 8-12 watts (impedance drop >10%) were applied discretely from the first distal main renal artery bifurcation all the way back to the ostium. The duration of each RF delivery was 60-120 sec, and up to 6 lesions (separated by > 5 mm) were performed both longitudinally and rotationally within each renal artery.
Device: Renal denervation guided by HFS
Active Comparator: Group 2 (RDN as standard procedure)

Renal arteries were assessed for suitability of ablation by renal angiography. The real-time 3-dimensional aorta-renal artery maps were reconstructed with the use of navigation system and ablation catheter via femoral artery access.

RF ablations of 8-12 watts (impedance drop >10%) were applied discretely from the first distal main renal artery bifurcation all the way back to the ostium. The duration of each RF delivery was 60-120 sec, and up to 6 lesions (separated by > 5 mm) were performed both longitudinally and rotationally within each renal artery. High-frequency stimulation (HFS) was performed before and after RDN to just to verify the response of BP
Device: Renal denervation as standard procedure

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
number of responders to renal denervation procedure
Time Frame: 12 month
12 month

Secondary Outcome Measures

Outcome Measure
Time Frame
complications rate
Time Frame: 12 month
12 month
cross-over rate
Time Frame: 12 month
12 month

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Meshalkin Research Institute of Pathology of Circulation

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

February 1, 2013

Primary Completion (Anticipated)

December 1, 2015

Study Completion (Anticipated)

February 1, 2016

Study Registration Dates

First Submitted

November 17, 2015

First Submitted That Met QC Criteria

November 19, 2015

First Posted (Estimate)

November 20, 2015

Study Record Updates

Last Update Posted (Estimate)

November 20, 2015

Last Update Submitted That Met QC Criteria

November 19, 2015

Last Verified

November 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 7452RDNHFS

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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