Evidence map›Paper›PMID 37523771›Full record

ArticleEuropace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology2023

Anatomic, histologic, and mechanical features of the right atrium: implications for leadless atrial pacemaker implantation.

Matthew O'Connor, Umberto Barbero, Daniel B Kramer, Angela Lee, Alina Hua, Tevfik Ismail, Karen P McCarthy, Steven Niederer, Christopher A Rinaldi, Vias Markides and 4 more

Open access · hybridAbstract read
In one paragraph

Article in 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, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
5.0field-weighted citation impact, top 4% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Regionalization of the atria for 3D electroanatomical mapping, cardiac imaging, and computational modelling: a clinical consensus statement of the European Heart Rhythm Association and the European Association of Cardiovascular Imaging 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 · 2025
    Guideline
  2. Article
  3. Article
  4. Article
  5. Article
  6. Leadless pacemaker implantation in the region of Bachmann's bundle: initial results.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
  7. Review
  8. Article
  9. Article
  10. Article
  11. Physiological Pacing: Historical Review With an Eye to the Future.Journal of cardiovascular electrophysiology · 2025
    Review
  12. Article
  13. Article
  14. Sex differences in atrial potential morphology.International journal of cardiology. Heart & vasculature · 2025
    Article
  15. Article
  16. Article
  17. Article
  18. Cardiac devices in the adult congenital population; A blessing and a curse.International journal of cardiology. Congenital heart disease · 2024
    Article
  19. Article
  20. How sex affects the sinus rhythm heartbeat.International journal of cardiology. Heart & vasculature · 2023
    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

14 authors at 6 institutions in 3 countries.

Matthew O'ConnorDepartment of Electrophysiology, Royal Brompton and Harefield Hospitals, Guy's and St Thomas' NHS Foundation Trust, London SW3 6NP, UK.ORCID 0000-0002-4659-2529
Umberto BarberoCardiac Morphology Unit, Royal Brompton Hospital, London, UK.ORCID 0000-0002-7082-4262
Daniel B KramerRichard A. and Susan F. Smith Center for Outcomes Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.ORCID 0000-0003-4241-3586
Angela LeeSchool of Biomedical Engineering and Imaging Sciences, King's College London, London, UK.ORCID 0000-0003-2385-6875
Alina HuaSchool of Biomedical Engineering and Imaging Sciences, King's College London, London, UK.ORCID 0000-0002-2648-7326
Tevfik IsmailDepartment of Cardiology, Guy's and St Thomas' Hospital Guy's and St Thomas' NHS Foundation Trust, London, UK.ORCID 0000-0002-1691-7599
Karen P McCarthyCardiology Unit, Santissima Annunziata Hospital, Savigliano ASL CN1, Italy.ORCID 0000-0002-8200-6400
Steven NiedererSchool of Biomedical Engineering and Imaging Sciences, King's College London, London, UK.ORCID 0000-0002-4612-6982
Christopher A RinaldiDepartment of Cardiology, Kings College Hospital, London SE5 9RS, UK.ORCID 0000-0002-3930-1957
Vias MarkidesDepartment of Electrophysiology, Royal Brompton and Harefield Hospitals, Guy's and St Thomas' NHS Foundation Trust, London SW3 6NP, UK.ORCID 0000-0002-9385-1298
John-Ross D ClarkeDivision of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.ORCID 0000-0002-1904-3874
Sonya Babu-NarayanDepartment of Electrophysiology, Royal Brompton and Harefield Hospitals, Guy's and St Thomas' NHS Foundation Trust, London SW3 6NP, UK.
Siew Yen HoCardiac Morphology Unit, Royal Brompton Hospital, London, UK.ORCID 0000-0002-3913-5637
Tom WongDepartment of Electrophysiology, Royal Brompton and Harefield Hospitals, Guy's and St Thomas' NHS Foundation Trust, London SW3 6NP, UK.ORCID 0000-0002-6484-4961
Guy's and St Thomas' NHS Foundation Trust · GBKing's College London · GBBeth Israel Deaconess Medical Center · USRoyal Brompton Hospital · GBKing's College Hospital · GBSt Thomas' Hospital · GB

Funding

British Heart Foundation FS/11/38/28864
6 · The paper itself

Abstract

backgroundLeadless pacemakers (LPs) may mitigate the risk of lead failure and pocket infection related to conventional transvenous pacemakers. Atrial LPs are currently being investigated. However, the optimal and safest implant site is not known.

objectivesWe aimed to evaluate the right atrial (RA) anatomy and the adjacent structures using complementary analytic models [gross anatomy, cardiac magnetic resonance imaging (MRI), and computer simulation], to identify the optimal safest location to implant an atrial LP human. METHODS AND

resultsWall thickness and anatomic relationships of the RA were studied in 45 formalin-preserved human hearts. In vivo RA anatomy was assessed in 100 cardiac MRI scans. Finally, 3D collision modelling was undertaken assessing for mechanical device interaction. Three potential locations for an atrial LP were identified; the right atrial appendage (RAA) base, apex, and RA lateral wall. The RAA base had a wall thickness of 2.7 ± 1.6 mm, with a low incidence of collision in virtual implants. The anteromedial recess of the RAA apex had a wall thickness of only 1.3 ± 0.4 mm and minimal interaction in the collision modelling. The RA lateral wall thickness was 2.6 ± 0.9 mm but is in close proximity to the phrenic nerve and sinoatrial artery.

conclusionsBased on anatomical review and 3D modelling, the best compromise for an atrial LP implantation may be the RAA base (low incidence of collision, relatively thick myocardial tissue, and without proximity to relevant epicardial structures); the anteromedial recess of the RAA apex and lateral wall are alternate sites. The mid-RAA, RA/superior vena cava junction, and septum appear to be sub-optimal fixation locations.

Indexed as

Atrial FibrillationPacemaker, ArtificialCardiac Pacing, ArtificialComputer SimulationHeart AtriaHumansLipopolysaccharidesVena Cava, SuperiorLipopolysaccharidesAtrial anatomyAveir pacemakerDual chamber pacingLeadless pacingRight atrial appendage

Identifiers

PMID37523771
PMCPMC10473833
OpenAlexW4385441931

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.