Evidence map›Paper›PMID 38300981›Full record

ReviewCirculation research2024

Mechanism of Ventricular Tachycardia Occurring in Chronic Myocardial Infarction Scar.

J Kevin Donahue, Jonathan Chrispin, Olujimi A Ajijola

Open access · greenAbstract readReview
In one paragraph

Review in Circulation research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 2 pooled it
15.7field-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

34 citing papers in PubMed, 2 syntheses or guidelines pooled it, 39 citations in OpenAlex.

  1. Pooled it
  2. Catheter ablation vs. anti-arrhythmic drug therapy for ventricular tachycardia in ischaemic heart disease: a meta-analysis of randomized controlled trials.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
    Pooled it
  3. Article
  4. Next-generation molecular imaging of cardiac fibrosis.The international journal of cardiovascular imaging · 2026
    Review
  5. Comparative performance of open thorax epicardial linear cryoprobe ablation versus focal tip radiofrequency catheter ablation in ventricular scar.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2026
    Article
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  9. Article
  10. Article
  11. Digital Twin-Guided Ablation for Ventricular Tachycardia.The New England journal of medicine · 2026
    Article
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  13. Article
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  15. Article
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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

3 authors at 3 institutions in 1 country.

J Kevin DonahueThe UMass Chan Medical School, Worcester, MA (J.K.D.).ORCID 0000-0002-2117-1728
Jonathan ChrispinThe Johns Hopkins University School of Medicine, Baltimore, MD (J.C.).ORCID 0000-0002-7985-3019
Olujimi A AjijolaUCLA Cardiac Arrhythmia Center, David Geffen School of Medicine at UCLA, Los Angeles, CA (O.A.A.).ORCID 0000-0001-6197-7593
Johns Hopkins University · USUCLA Health · USUniversity of Massachusetts Chan Medical School · US

Funding

Focal Modification of Electrical Conduction in the HeartR01HL067148 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI DONAHUE, J KEVIN · 2002 to 2011
$3.7M
Translating post-infarct ventricular tachycardia mechanisms into a therapyR01HL167527 · NHLBI · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI J Kevin Donahue · 2023 to 2026
$3.2M
Integrative analysis of electrophysiology in the healed myocardial infarction scarR01HL134185 · NHLBI · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI DONAHUE, J KEVIN · 2017 to 2020
$2.8M
Understanding Modulation of Neuronal Subpopulations by Sympathetic GliaR01HL162717 · NHLBI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI AJIJOLA, OLUJIMI A · 2022 to 2025
$2.4M
Mechanisms of Cardiac TRPV1 Afferent Remodeling in Ventricular ArrhythmiasR01HL159001 · NHLBI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI AJIJOLA, OLUJIMI A · 2021 to 2024
$2.1M
NHLBI NIH HHS R01 HL067148NHLBI NIH HHS R01 HL134185NHLBI NIH HHS R01 HL159001NHLBI NIH HHS R01 HL162717NHLBI NIH HHS R01 HL167527
6 · The paper itself

Abstract

Cardiac arrest is the leading cause of death in the more economically developed countries. Ventricular tachycardia associated with myocardial infarct is a prominent cause of cardiac arrest. Ventricular arrhythmias occur in 3 phases of infarction: during the ischemic event, during the healing phase, and after the scar matures. Mechanisms of arrhythmias in these phases are distinct. This review focuses on arrhythmia mechanisms for ventricular tachycardia in mature myocardial scar. Available data have shown that postinfarct ventricular tachycardia is a reentrant arrhythmia occurring in circuits found in the surviving myocardial strands that traverse the scar. Electrical conduction follows a zigzag course through that area. Conduction velocity is impaired by decreased gap junction density and impaired myocyte excitability. Enhanced sympathetic tone decreases action potential duration and increases sarcoplasmic reticular calcium leak and triggered activity. These elements of the ventricular tachycardia mechanism are found diffusely throughout scar. A distinct myocyte repolarization pattern is unique to the ventricular tachycardia circuit, setting up conditions for classical reentry. Our understanding of ventricular tachycardia mechanisms continues to evolve as new data become available. The ultimate use of this information would be the development of novel diagnostics and therapeutics to reliably identify at-risk patients and prevent their ventricular arrhythmias.

Indexed as

Heart ArrestMyocardial InfarctionTachycardia, VentricularArrhythmias, CardiacCicatrixElectrocardiographyHumanscause of deathchronic total occlusioncomplicationsdeathmortality

Identifiers

PMID38300981
PMCPMC10836816
OpenAlexW4391428302

What OpenQuestion holds

Textmetadata
LicenceTDM
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.