Evidence map›Paper›PMID 33936979›Full record

ArticleQuantitative imaging in medicine and surgery2021

Association of individual aortic leaflet calcification on paravalvular regurgitation and conduction abnormalities with self-expanding trans-catheter aortic valve insertion.

Ciara Mahon, Allan Davies, Alessia Gambaro, Francesca Musella, Ana Luisa Costa, Vasileios Panoulas, Edward Nicol, Alison Duncan, Simon Davies, Saeed Mirsadraee

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Article in Quantitative imaging in medicine and surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.1field-weighted citation impact, top 22% 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

7 citing papers in PubMed, 8 citations in OpenAlex.

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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

10 authors at 1 institution in 1 country.

Ciara MahonRoyal Brompton and Harefield NHS Foundation Trust, London, UK.
Allan DaviesRoyal Brompton and Harefield NHS Foundation Trust, London, UK.
Alessia GambaroRoyal Brompton and Harefield NHS Foundation Trust, London, UK.
Francesca MusellaRoyal Brompton and Harefield NHS Foundation Trust, London, UK.
Ana Luisa CostaRoyal Brompton and Harefield NHS Foundation Trust, London, UK.
Vasileios PanoulasRoyal Brompton and Harefield NHS Foundation Trust, London, UK.
Edward NicolRoyal Brompton and Harefield NHS Foundation Trust, London, UK.
Alison DuncanRoyal Brompton and Harefield NHS Foundation Trust, London, UK.
Simon DaviesRoyal Brompton and Harefield NHS Foundation Trust, London, UK.
Saeed MirsadraeeRoyal Brompton and Harefield NHS Foundation Trust, London, UK.
Royal Brompton & Harefield NHS Foundation Trust · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundComplication rates of paravalvular aortic regurgitation (PVR) and permanent pacemaker insertion remain high in patients undergoing trans-catheter aortic valve insertion for severe aortic stenosis. The spatial distribution of calcium between individual aortic valve leaflets, and its potential role in these complications is gaining interest. We aimed to assess the accuracy of individual aortic valve leaflet calcium quantification, and to determine its effect on the frequency of these complications.

methodsThis was a retrospective study of 251 patients who underwent trans-catheter aortic valve insertion using the Evolut RTM valve. The off-line Terarecon software platform was used for Agatston scoring the short axis views.

resultsThere was a correlation between the sum of the individual leaflet and the total aortic valve calcium score. There was a univariate association between an increase [per 100 Agatston unit (AU)] in both right coronary leaflet (RCL) and left coronary leaflet (LCL) calcium with the risk of PVR. There was an association between an increase in LCL calcium score (per 100 AU) and need for post-implantation balloon aortic valvuloplasty (BAV). There was no association between individual leaflet calcification on the risk of permanent pacemaker insertion.

conclusionsThis study supports the idea that a quantifiable and reproducible method of individual valve leaflet calcification score may serve as an independent risk factor for paravalvular regurgitation, beyond visual assessment of asymmetry. However, the same may not be true of spatial calcium distribution and permanent pacemaker implantation (PPI).

Indexed as

paravalvular aortic regurgitation (PVR)permanent pacemaker insertionTrans-catheter aortic valve implantation (TAVI)

Identifiers

PMID33936979
PMCPMC8047340
OpenAlexW3135047674

What OpenQuestion holds

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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.