Evidence map›Paper›PMID 31600276›Full record

ArticlePloS one2019

Mechanical effects of MitraClip on leaflet stress and myocardial strain in functional mitral regurgitation - A finite element modeling study.

Yue Zhang, Vicky Y Wang, Ashley E Morgan, Jiwon Kim, Mark D Handschumacher, Chaya S Moskowitz, Robert A Levine, Liang Ge, Julius M Guccione, Jonathan W Weinsaft and 1 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.6field-weighted citation impact, top 9% 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

16 citing papers in PubMed, 24 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

11 authors at 5 institutions in 1 country.

Yue ZhangSan Francisco Veterans Affairs Medical Center, San Francisco, CA, United States of America.
Vicky Y WangSan Francisco Veterans Affairs Medical Center, San Francisco, CA, United States of America.ORCID 0000-0003-0895-3132
Ashley E MorganDepartment of Surgery, University of California, San Francisco, CA, United States of America.
Jiwon KimDepartment of Medicine, Weill Cornell Medicine, New York, NY, United States of America.
Mark D HandschumacherDivision of Cardiology, Department of Medicine, Massachusetts General Hospital, Boston, MA, United States of America.ORCID 0000-0002-9214-9544
Chaya S MoskowitzDepartment of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, United States of America.
Robert A LevineDivision of Cardiology, Department of Medicine, Massachusetts General Hospital, Boston, MA, United States of America.
Liang GeSan Francisco Veterans Affairs Medical Center, San Francisco, CA, United States of America.
Julius M GuccioneSan Francisco Veterans Affairs Medical Center, San Francisco, CA, United States of America.
Jonathan W WeinsaftDepartment of Medicine, Weill Cornell Medicine, New York, NY, United States of America.
Mark B RatcliffeSan Francisco Veterans Affairs Medical Center, San Francisco, CA, United States of America.ORCID 0000-0002-2460-3311
San Francisco VA Medical Center · USCornell University · USMassachusetts General Hospital · USMemorial Sloan Kettering Cancer Center · USUniversity of California, San Francisco · US

Funding

X-RAY CRYSTALLOGRAPHYP30CA008748 · NCI · SLOAN-KETTERING INSTITUTE FOR CANCER RES · PI Hongbiao Carl Lekaye · 1985 to 2026
$347.4M
QUANTITATIVE ANALYSIS OF LEFT VENTRICULPLASTY--CHFR01HL063348 · NHLBI · NORTHERN CALIFORNIA INSTITUTE RES &EDUC · PI RATCLIFFE, MARK B · 2000 to 2017
$6.8M
Improving Mitral Compensation In Ischemic RegurgitationR01HL141917 · NHLBI · MASSACHUSETTS GENERAL HOSPITAL · PI AIKAWA, ELENA, BISCHOFF, JOYCE E. · 2018 to 2021
$5.6M
CMR Myocardial Tissue Based Prediction of Ischemic MR Revascularization ResponseR01HL128278 · NHLBI · WEILL MEDICAL COLL OF CORNELL UNIV · PI WEINSAFT, JONATHAN W. · 2015 to 2019
$3.8M
Treating Ventricle and Valve: New Synergies for Ischemic LV Remodeling with MRR01HL128099 · NHLBI · MASSACHUSETTS GENERAL HOSPITAL · PI AKAR, FADI GABRIEL, LEVINE, ROBERT A · 2016 to 2019
$2.8M
NCI NIH HHS P30 CA008748NHLBI NIH HHS R01 HL063348NHLBI NIH HHS R01 HL128099NHLBI NIH HHS R01 HL128278NHLBI NIH HHS R01 HL141917
6 · The paper itself

Abstract

purposeMitraClip is the sole percutaneous device approved for functional mitral regurgitation (MR; FMR) but MR recurs in over one third of patients. As device-induced mechanical effects are a potential cause for MR recurrence, we tested the hypothesis that MitraClip increases leaflet stress and procedure-related strain in sub-valvular left ventricular (LV) myocardium in FMR associated with coronary disease (FMR-CAD).

methodsSimulations were performed using finite element models of the LV + mitral valve based on MRI of 5 sheep with FMR-CAD. Models were modified to have a 20% increase in LV volume (↑LV_VOLUME) and MitraClip was simulated with contracting beam elements (virtual sutures) placed between nodes in the center edge of the anterior (AL) and posterior (PL) mitral leaflets. Effects of MitraClip on leaflet stress in the peri-MitraClip region of AL and PL, septo-lateral annular diameter (SLAD), and procedure-related radial strain (Err) in the sub-valvular myocardium were calculated.

resultsMitraClip increased peri-MitraClip leaflet stress at end-diastole (ED) by 22.3±7.1 kPa (p<0.0001) in AL and 14.8±1.2 kPa (p<0.0001) in PL. MitraClip decreased SLAD by 6.1±2.2 mm (p<0.0001) and increased Err in the sub-valvular lateral LV myocardium at ED by 0.09±0.04 (p<0.0001)). Furthermore, MitraClip in ↑LV_VOLUME was associated with persistent effects at ED but also at end-systole where peri-MitraClip leaflet stress was increased in AL by 31.9±14.4 kPa (p = 0.0268) and in PL by 22.5±23.7 kPa (p = 0.0101).

conclusionsMitraClip for FMR-CAD increases mitral leaflet stress and radial strain in LV sub-valvular myocardium. Mechanical effects of MitraClip are augmented by LV enlargement.

Indexed as

Finite Element AnalysisModels, CardiovascularSurgical InstrumentsAnimalsComputer SimulationDiastoleMitral ValveMitral Valve InsufficiencyMyocardiumSheepStress, MechanicalSystole

Identifiers

PMID31600276
PMCPMC6786765
OpenAlexW2979956323

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.