Evidence map›Paper›PMID 39327797›Full record

Trial reportCirculation2025

Performance and Safety of the Extravascular Implantable Cardioverter Defibrillator Through Long-Term Follow-Up: Final Results From the Pivotal Study.

Paul Friedman, Francis Murgatroyd, Lucas V A Boersma, Jaimie Manlucu, Bradley P Knight, Nicolas Clémenty, Christophe Leclercq, Anish Amin, Béla Merkely, Ulrika Maria Birgersdotter-Green and 18 more

Registry-linked trialAbstract readMulticenter StudyClinical Trial
In one paragraph

Trial report in Circulation, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04060680 (Extravascular ICD Pivotal Study), which is not on this map. Cited by 44 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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.

NCT04060680 nacompletednot on this map

Extravascular ICD Pivotal Study (EV ICD)

TypeinterventionalSponsorMedtronic Cardiac Rhythm and Heart FailureRan2019 to 2024Enrolled393ConditionsTachycardia, Ventricular ArrythmiaArmsDefibrillation using the Extravascular ICD
3 · Its place in the literature

Who cites it

44 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Evaluation of a second-generation intercostal extravascular implantable cardioverter defibrillator lead with a pectoral pulse generator for sensing, defibrillation, and anti-tachycardia pacing.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 · 2025
    Trial
  4. Beyond one-size-fits-all: personalized selection of contemporary implantable cardioverter-defibrillator therapies.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
    Review
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  17. CT-guided lead placement prevents P-wave oversensing in extravascular ICD.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
    Article
  18. Article
  19. Article
  20. Extravascular versus subcutaneous ICD: a propensity score-matched analysis of procedural outcomes.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2026
    Article
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

28 authors.

Paul FriedmanMayo Clinic, Rochester, MN (P.F.).ORCID 0000-0001-5052-2948
Francis MurgatroydKing's College Hospital, London, UK (F.M.).
Lucas V A BoersmaCardiology Department of St. Antonius Hospital Nieuwegein, Netherlands (L.V.A.B.).ORCID 0000-0003-4591-4220
Jaimie ManlucuLondon Health Sciences Centre, ON, Canada (J.M.).
Bradley P KnightNorthwestern University, Evanston, IL (B.P.K.).ORCID 0000-0002-2129-0401
Nicolas ClémentyClinique du Millenaire, Montpellier, France (N.C.).
Christophe LeclercqCHU de Rennes-Hôpital Pontchaillou, France (C.L.).ORCID 0000-0002-4399-5568
Anish AminRiverside Methodist Hospital, Columbus, OH (A.A.).
Béla MerkelyHeart and Vascular Center, Semmelweis University, Budapest, Hungary (B.M.).ORCID 0000-0001-6514-0723
Ulrika Maria Birgersdotter-GreenUniversity of California San Diego, San Diego (U.M.B.-G.).ORCID 0000-0002-0473-1826
Joseph Yat Sun ChanPrince of Wales Hospital, Chinese University of Hong Kong, China (J.Y.S.C.).ORCID 0000-0002-3356-4836
Mauro BiffiPoliclinico Sant' Orsola-Malpighi, Bologna, Italy (M.B.).ORCID 0000-0003-4590-8584
Reinoud Elwin KnopsAmsterdam University Medical Centers Netherlands (L.V.A.B., R.E.K.).ORCID 0000-0002-0772-3573
Gregory EngelPalo Alto Medical Foundation, Redwood City, CA (G.E.).
Ignacio Muñoz CarvajalHospital Universitario Reina Sofía, Córdoba, Spain (I.M.C.).ORCID 0000-0003-3843-8609
Laurence M EpsteinNorthwell Health, Manhasset, NY (L.M.E.).ORCID 0000-0001-5410-0291
Venkata SagiBaptist Health, Jacksonville, FL (V.S.).
Jens Brock JohansenOdense Universitetshospital, Denmark (J.B.J.).ORCID 0000-0001-7157-7948
Maciej SterlińskiI Klinika Zaburzeń Rytmu Serca/ Narodowy Instytut Kardiologii, Warszawa, Poland (M.S.).ORCID 0000-0001-5250-3679
Clemens SteinwenderKepler University Hospital, Linz, Austria (C.S.).ORCID 0000-0002-4963-5563
Troy HounshellIowa Heart Center, West Des Moines (T.H.).ORCID 0000-0002-7092-0334
Richard AbbenCardiovascular Institute of the South, Houma, LA (R.A.).ORCID 0009-0005-6710-5098
Amy E ThompsonMedtronic Inc, Mounds View, MN (A.E.T., Y.Z., C.W., S.W.).ORCID 0000-0002-7363-5870
Yan ZhangMedtronic Inc, Mounds View, MN (A.E.T., Y.Z., C.W., S.W.).
Christopher WiggenhornMedtronic Inc, Mounds View, MN (A.E.T., Y.Z., C.W., S.W.).
Sarah WilleyMedtronic Inc, Mounds View, MN (A.E.T., Y.Z., C.W., S.W.).
Ian CrozierChristchurch Hospital, New Zealand (I.C.).ORCID 0000-0003-4652-7791
Extravascular ICD Pivotal Study Investigators

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSubsternal lead placement of the extravascular implantable cardioverter defibrillator (EV ICD) permits both defibrillation at thresholds similar to those seen with transvenous implantable cardioverter defibrillators and effective anti-tachycardia pacing (ATP) while avoiding the vasculature and associated complications. The global Pivotal study has shown the EV ICD system to be safe and effective through 6 months, but long-term experience has yet to be published. Our aim was to report the performance and safety of the EV ICD system throughout the study.

methodsThe EV ICD Pivotal study was a prospective, global, single-arm, premarket clinical study. Individuals with a Class I or IIa indication for a single-chamber implantable cardioverter defibrillator per guidelines were enrolled. Freedom from major system- or procedure-related complications and appropriate and inappropriate therapy rates were assessed through 3 years with the Kaplan-Meier method. ATP success was calculated from simple proportions.

resultsAn implantation was attempted in 316 patients (25.3% female; 53.8±13.1 years of age; 81.6% primary prevention; left ventricular ejection fraction, 38.9±15.4%). Of 299 patients with a successful implantation, 24 experienced 82 spontaneous arrhythmic episodes that were appropriately treated with ATP only (38, 46.3%), shock only (34, 41.5%), or both (10, 12.2%) for a Kaplan-Meier-estimated rate of first any appropriate therapy of 9.2% at 3 years. ATP was successful in 77.1% (37/48) of episodes, and ATP use significantly increased from discharge to last follow-up visit (

conclusionsFrom implantation to study completion, the EV ICD Pivotal study demonstrated that a single integrated system with an extravascular lead placed in the substernal space maintains high ATP success, effective defibrillation, and a consistent safety profile. REGISTRATION: URL: https://www.clinicaltrials.gov; Unique identifier: NCT04060680.

Indexed as

Defibrillators, ImplantableAdultAgedArrhythmias, CardiacElectric CountershockFemaleFollow-Up StudiesHumansMaleMiddle AgedProspective StudiesTime FactorsTreatment Outcomearrhythmias, cardiaccardiac pacing, artificialdeath, sudden, cardiacdefibrillators, implantableprimary preventionsecondary prevention

Identifiers

PMID39327797
PMCPMC11771354

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Registered trials

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.