Evidence map›Paper›PMID 31303108›Full record

ArticleHypertension (Dallas, Tex. : 1979)2019

Procedural and Anatomical Determinants of Multielectrode Renal Denervation Efficacy.

Abraham R Tzafriri, Felix Mahfoud, John H Keating, Anna-Maria Spognardi, Peter M Markham, Gee Wong, Debby Highsmith, Patrick O'Fallon, Kristine Fuimaono, Elazer R Edelman

Open access · bronzeAbstract read
In one paragraph

Article in Hypertension (Dallas, Tex. : 1979), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.7field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 24 citations in OpenAlex.

  1. Review
  2. Assessment of a "main renal artery + branches" ablation strategy for catheter-based circumferential ultrasonic renal denervation.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Article
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  4. Translational value of preclinical models for renal denervation: a histological comparison of human versus porcine renal nerve anatomy.EuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology · 2023
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  8. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 2 institutions in 2 countries.

Abraham R TzafririFrom the Research and Innovation Department, CBSET, Inc, Lexington, MA (A.R.T.), CBSET, Inc, Lexington.
Felix MahfoudDepartment of Internal Medicine III, Saarland University, Homburg/Saar, Germany (F.M.).
John H KeatingDepartment of Pathology (J.JH.K., G.W.), CBSET, Inc, Lexington, CBSET, Inc, Lexington.
Anna-Maria SpognardiDepartment of Applied Sciences (A.-M.S., P.M.M.) CBSET, Inc, Lexington.
Peter M MarkhamDepartment of Applied Sciences (A.-M.S., P.M.M.) CBSET, Inc, Lexington.
Gee WongDepartment of Pathology (J.JH.K., G.W.), CBSET, Inc, Lexington, CBSET, Inc, Lexington.
Debby HighsmithBiosense Webster, Inc, Irwindale, CA (D.H., P.O., K.F.).
Patrick O'FallonBiosense Webster, Inc, Irwindale, CA (D.H., P.O., K.F.).
Kristine FuimaonoBiosense Webster, Inc, Irwindale, CA (D.H., P.O., K.F.).
Elazer R EdelmanInstitute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA (E.R.E.).
Massachusetts Institute of Technology · USSaarland University · DE

Funding

Vascular Drug Delivery - Supplement for EquipmentR01GM049039 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI EDELMAN, ELAZER R · 1994 to 2019
$8.9M
NIGMS NIH HHS R01 GM049039
6 · The paper itself

Abstract

Radiofrequency renal denervation is under investigation for treatment of hypertension with variable success. We developed preclinical models to examine the dependence of ablation biomarkers on renal denervation treatment parameters and anatomic variables. One hundred twenty-nine porcine renal arteries were denervated with an irrigated radiofrequency catheter with multiple helically arrayed electrodes. Nerve effects and ablation geometries at 7 days were characterized histomorphometrically and correlated with associated renal norepinephrine levels. Norepinephrine exhibited a threshold dependence on the percentage of affected nerves across the range of treatment durations (30-60 s) and power set points (6-20 W). For 15 W/30 s treatments, norepinephrine reduction and percentage of affected nerves tracked with number of electrode treatments, confirming additive effects of helically staggered ablations. Threshold effects were only attained when ≥4 electrodes were powered. Histomorphometry and computational modeling both illustrated that radiofrequency treatments directed at large neighboring veins resulted in subaverage ablation areas and, therefore, contributed suboptimally to efficacy. Account for measured nerve distribution patterns and the annular geometry of the artery revealed that, regardless of treatment variables, total ablation area and circumferential coverage were the prime determinants of renal denervation efficacy, with increased efficacy at smaller diameters.

Indexed as

AnimalsBiopsy, NeedleCatheter AblationDisease Models, AnimalElectrodesFemaleHumansHypertensionImmunohistochemistryKidneyMaleNorepinephrineRandom AllocationReference ValuesRenal ArterySwineNorepinephrinecatheter ablationhypertensionmodels, animalnorepinephrinerenal artery

Identifiers

PMID31303108
PMCPMC6738948
OpenAlexW2965341658

What OpenQuestion holds

Textmetadata
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.