Evidence map›Paper›PMID 36166690›Full record

ArticleCirculation. Arrhythmia and electrophysiology2022

Effects of Electrode-Tissue Proximity on Cardiac Lesion Formation Using Pulsed Field Ablation.

Brian Howard, Atul Verma, Wendy S Tzou, Lars Mattison, Bor Kos, Damijan Miklavčič, Birce Onal, Mark T Stewart, Daniel C Sigg

Open access · hybridAbstract read
In one paragraph

Article in Circulation. Arrhythmia and electrophysiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 3 pooled it
16.7field-weighted citation impact, top 1% 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

66 citing papers in PubMed, 3 syntheses or guidelines pooled it, 108 citations in OpenAlex.

  1. Ventricular pulsed field ablation from bench to bedside: preclinical and clinical evidence from a systematic review and meta-analysis.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2026
    Pooled it
  2. Intracardiac Echocardiography during Invasive Electrophysiological Procedures: a Scientific Statement of the European Heart Rhythm Association of the ESC, and the European Association of Percutaneous Cardiovascular Interventions of the ESC.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2026
    Guideline
  3. Pooled it
  4. Trial
  5. Initial clinical experience with the balloon-in-basket pulsed field ablation system: acute results of the VOLT CE mark feasibility study.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2024
    Trial
  6. Trial
  7. First-in-human clinical series of a novel conformable large-lattice pulsed field ablation catheter for pulmonary vein isolation.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2024
    Trial
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. One year outcomes of a fluoroless pulsed field ablation approach for atrial fibrillation.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2026
    Article
  14. Article
  15. Article
  16. Review
  17. Review
  18. Review
  19. Article
  20. Article

6 more citing papers are in PubMed but not listed here.

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

9 authors at 4 institutions in 4 countries.

Brian HowardMedtronic, Minneapolis, MN (B.H., L.M., B.O., M.T.S., D.C.S.).
Atul VermaMcGill University Health Center, McGill University, Montreal, Quebec, Canada (A.V.).ORCID 0000-0002-1020-9727
Wendy S TzouUniversity of Colorado School of Medicine, Aurora, CO (W.S.T.).ORCID 0000-0002-8514-1165
Lars MattisonMedtronic, Minneapolis, MN (B.H., L.M., B.O., M.T.S., D.C.S.).
Bor KosUniversity of Ljubljana, Slovenia (B.K., D.M.).ORCID 0000-0001-6219-7046
Damijan MiklavčičUniversity of Ljubljana, Slovenia (B.K., D.M.).ORCID 0000-0003-3506-9449
Birce OnalMedtronic, Minneapolis, MN (B.H., L.M., B.O., M.T.S., D.C.S.).ORCID 0000-0001-8961-8939
Mark T StewartMedtronic, Minneapolis, MN (B.H., L.M., B.O., M.T.S., D.C.S.).ORCID 0000-0003-1717-195X
Daniel C SiggMedtronic, Minneapolis, MN (B.H., L.M., B.O., M.T.S., D.C.S.).ORCID 0000-0002-9556-0849
Medtronic (Ireland) · IEUniversity of Ljubljana · SIMcGill University Health Centre · CAUniversity of Colorado Denver · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPulsed field ablation (PFA) is a novel energy modality for treatment of cardiac arrhythmias. The impact of electrode-tissue proximity on lesion formation by PFA has not been conclusively assessed. The objective of this investigation was to evaluate the effects of electrode-tissue proximity on cardiac lesion formation with a biphasic, bipolar PFA system.

methodsPFA was delivered on the ventricular epicardial surface in an isolated porcine heart model (n=8) via a 4-electrode prototype catheter. An offset tool was designed to control the distance between electrodes and target tissue; deliveries were placed 0 mm (0 mm offset), 2 mm (2 mm offset), and 4 mm away from the tissue (4 mm offset). Lesions were assessed using tetrazolium chloride staining. Numerical models for the experimental setup with and without the offset tool validated and supported results.

resultsCardiac lesion dimensions decreased proportional to the distance between epicardial surface and electrodes. Lesion depth averaged 4.3±0.4 mm, 2.7±0.4 mm, and 1.3±0.4 mm for the 0, 2, and 4 mm and lesion width averaged 9.4±1.1 mm, 7.5±0.8 mm and 5.8±1.4 mm for the 0, 2, and 4 mm offset distances, respectively. Numerical modeling matched ex vivo results well and predicted lesion creation with and without the offset tool.

conclusionsUsing a biphasic, bipolar PFA system resulted in cardiac lesions even in the 0 mm offset distance case. The relationship between lesion depth and offset distance was linear, and the deepest lesions were created with 0 mm offset distance, that is, with electrodes in contact with tissue. Therefore, close electrode-tissue proximity increases the likelihood of achieving transmural lesions by maximizing the electric field penetration into the target tissue.

Indexed as

Catheter AblationAnimalsChloridesElectrodesHeartHeart VentriclesSwineChloridesarrhythmia, cardiacatrial fibrillationcardiac ablationchlorideelectrode

Identifiers

PMID36166690
PMCPMC9584049
OpenAlexW4297326246

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

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.