Evidence map›Paper›PMID 22037916›Full record

ArticleAnnals of biomedical engineering2012

Mitral valve annuloplasty: a quantitative clinical and mechanical comparison of different annuloplasty devices.

Manuel K Rausch, Wolfgang Bothe, John-Peder Escobar Kvitting, Julia C Swanson, D Craig Miller, Ellen Kuhl

Abstract readComparative StudyEvaluation Study
In one paragraph

Article in Annals of biomedical engineering, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
5.5field-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

33 citing papers in PubMed, 70 citations in OpenAlex.

  1. Article
  2. Percutaneous repair of tricuspid regurgitation.European heart journal supplements : journal of the European Society of Cardiology · 2024
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Tricuspid Valve Annuloplasty Alters Leaflet Mechanics.Annals of biomedical engineering · 2020
    Article
  8. Flexible or rigid ring in mitral annuloplasty-do the results differ?Indian journal of thoracic and cardiovascular surgery · 2020
    Article
  9. Article
  10. The Effect of Downsizing on the Normal Tricuspid Annulus.Annals of biomedical engineering · 2020
    Article
  11. Biomechanics of the Tricuspid Annulus: A Review of the Annulus'Mitteilungen der Gesellschaft fur Angewandte Mathematik und Mechanik · 2019
    Article
  12. Mitral valve repair: moving towards a personalized ring.Journal of cardiothoracic surgery · 2019
    Article
  13. Multi-resolution geometric modeling of the mitral heart valve leaflets.Biomechanics and modeling in mechanobiology · 2018
    Article
  14. Article
  15. A virtual sizing tool for mitral valve annuloplasty.International journal for numerical methods in biomedical engineering · 2017
    Article
  16. Review
  17. Article
  18. Isolated effect of geometry on mitral valve function for in silico model development.Computer methods in biomechanics and biomedical engineering · 2015
    Article
  19. Article
  20. 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 at 1 institution in 1 country.

Manuel K RauschDepartment of Mechanical Engineering, Stanford University, 496 Lomita Mall, Stanford, CA 94305, USA.
Wolfgang Bothe
John-Peder Escobar Kvitting
Julia C Swanson
D Craig Miller
Ellen Kuhl
Stanford University · US

Funding

VENTRICULAR DYNAMICS FROM SURGICALLY INSERTED MARKERSR01HL029589 · NHLBI · STANFORD UNIVERSITY · PI MILLER, D CRAIG · 1985 to 2007
$6.6M
CHRONIC ISCHEMIC MR-MECHANISMS &NOVEL SURGICAL THERAPYR01HL067025 · NHLBI · STANFORD UNIVERSITY · PI MILLER, D CRAIG · 2001 to 2010
$3.9M
NHLBI NIH HHS R01 HL029589NHLBI NIH HHS R01 HL067025NHLBI NIH HHS R01 HL29589NHLBI NIH HHS R01 HL67025
6 · The paper itself

Abstract

Mitral valve annuloplasty is a common surgical technique used in the repair of a leaking valve by implanting an annuloplasty device. To enhance repair durability, these devices are designed to increase leaflet coaptation, while preserving the native annular shape and motion; however, the precise impact of device implantation on annular deformation, strain, and curvature is unknown. In this article, we quantify how three frequently used devices significantly impair native annular dynamics. In controlled in vivo experiments, we surgically implanted 11 flexible-incomplete, 11 semi-rigid-complete, and 12 rigid-complete devices around the mitral annuli of 34 sheep, each tagged with 16 equally spaced tantalum markers. We recorded four-dimensional marker coordinates using biplane videofluoroscopy, first with device and then without, which were used to create mathematical models using piecewise cubic splines. Clinical metrics (characteristic anatomical distances) revealed significant global reduction in annular dynamics upon device implantation. Mechanical metrics (strain and curvature fields) explained this reduction via a local loss of anterior dilation and posterior contraction. Overall, all three devices unfavorably caused reduction in annular dynamics. The flexible-incomplete device, however, preserved native annular dynamics to a larger extent than the complete devices. Heterogeneous strain and curvature profiles suggest the need for heterogeneous support, which may spawn more rational design of annuloplasty devices using design concepts of functionally graded materials.

Indexed as

AnimalsBiomechanical PhenomenaBiomedical EngineeringHeart Valve Prosthesis ImplantationHumansMaleMitral ValveMitral Valve AnnuloplastyModels, AnimalModels, CardiovascularProsthesis DesignSheep, Domestic

Identifiers

PMID22037916
PMCPMC3288426
OpenAlexW2108876396

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.