Evidence map›Paper›PMID 40728182›Full record

SynthesisJournal of the American Heart Association2025

Size Matters. Prevalence and Clinical Implications of Left Ventricular Apical Aneurysms in Hypertrophic Cardiomyopathy: A Systematic Review and Meta-Analysis.

Katie Linden, Nathan Green, Alison Muir, James W Malcolmson, Saidi A Mohiddin, Constantinos O'Mahony

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in Journal of the American Heart Association, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–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.

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

5 citing papers in PubMed.

  1. Review
  2. Review
  3. Article
  4. Article
  5. 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

6 authors.

Katie LindenQueen's University Belfast Wellcome-Wolfson Institute for Experimental Medicine Belfast UK.ORCID 0009-0008-1050-8429
Nathan GreenDepartment of Statistical Science University College London London UK.
Alison MuirCardiology Department Belfast Health and Social Care Trust Belfast UK.
James W MalcolmsonWilliam Harvey Research Institute NIHR Barts Biomedical Research Centre, Queen Mary University London London UK.ORCID 0000-0001-9860-3800
Saidi A MohiddinWilliam Harvey Research Institute NIHR Barts Biomedical Research Centre, Queen Mary University London London UK.ORCID 0000-0002-1031-4084
Constantinos O'MahonyBart's Heart Center St Bartholomew's Hospital London UK.ORCID 0000-0001-6931-4647

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe aim of this study was to systematically review the recently published literature and determine the prevalence of left ventricular apical aneurysm (LVAA) formation in hypertrophic cardiomyopathy and its association with sudden cardiac death, systemic embolization, and heart failure.

methodsThe protocol was registered with the International Prospective Register of Systematic Reviews (registration number: CRD42023453640). MEDLINE and manual searches for articles published up to August 2023 were performed. Longitudinal, observational cohorts of unselected adult patients with hypertrophic cardiomyopathy were considered. Data were pooled using a random-effects model.

resultsA total of 321 articles fulfilled the search criteria, and 10 retrospective observational studies were selected for the meta-analysis. The pooled prevalence of LVAA was 3% (95% CI, 2%-5%), and 57% of LVAAs were small (<2 cm). Small LVAAs had a lower prevalence of sudden cardiac death end points (4.71% [95% CI, 1.5%-9%) than bigger (≥2 cm) LVAAs (22% [95% CI, 15%-31%), with an odds ratio of 4.65 (95% CI, 2.14-10.10). The prevalence of systemic emboli was also higher in bigger LVAAs (17% [95% CI, 9%-28%) when compared with small LVAA (9% [95% CI, 4%-16%), with an odds ratio of 1.78 (95% CI, 0.53-5.99). Left ventricular thrombi were also more frequently detected in bigger LVAAs (30% [95% CI, 20%-42%) than small LVAAs (2% [95% CI, 0%-6%), with an odds ratio of 10.92 (95% CI, 3.75-31.84). There are scant data on heart failure deaths.

conclusionsThe available data suggest that patients with bigger LVAAs (>2 cm) have the highest risk of poor outcomes and could be preferentially targeted for primary prevention of sudden cardiac death and systemic embolization.

Indexed as

Cardiomyopathy, HypertrophicHeart AneurysmHeart VentriclesDeath, Sudden, CardiacHeart FailureHumansPrevalenceRisk Factorshypertrophic cardiomyopathyleft ventricular apical aneurysmprimary prevention

Identifiers

PMID40728182
PMCPMC12449909

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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.