Evidence map›Paper›PMID 20572151›Full record

ArticleMagnetic resonance in medicine2010

QRS prolongation in myotonic muscular dystrophy and diffuse fibrosis on cardiac magnetic resonance.

Saman Nazarian, David A Bluemke, Kathryn R Wagner, Menekhem M Zviman, Evrim Turkbey, Brian S Caffo, Monda Shehata, David Edwards, Barbara Butcher, Hugh Calkins and 3 more

Open access · greenAbstract read
In one paragraph

Article in Magnetic resonance in medicine, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.4field-weighted citation impact, top 46% 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

8 citing papers in PubMed, 23 citations in OpenAlex.

  1. Review
  2. Article
  3. Cardiac Pathology in Myotonic Dystrophy Type 1.International journal of molecular sciences · 2021
    Review
  4. Article
  5. Article
  6. Frontiers in neurology · 2019
    Article
  7. Myocardial fibrosis in patients with myotonic dystrophy type 1: a cardiovascular magnetic resonance study.Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · 2014
    Article
  8. 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

13 authors at 3 institutions in 1 country.

Saman NazarianDepartment of Medicine/Cardiology, Johns Hopkins University, Baltimore, Maryland 21287, USA. snazarian@jhmi.edu
David A Bluemke
Kathryn R Wagner
Menekhem M Zviman
Evrim Turkbey
Brian S Caffo
Monda Shehata
David Edwards
Barbara Butcher
Hugh Calkins
Ronald D Berger
Henry R Halperin
Gordon F Tomaselli
Johns Hopkins University · USJohns Hopkins Medicine · USNational Institutes of Health · US

Funding

Institute for Clinical and Translational Research (KL2)KL2RR025006 · NCRR · JOHNS HOPKINS UNIVERSITY · PI FORD, DANIEL ERNEST · 2007 to 2011
$12.9M
Molecular Biomedical Imaging Laboratory (NIBIB)ZIAEB000072 · NIBIB · NATIONAL INSTITUTE OF BIOMEDICAL IMAGING AND BIOENGINEERING · PI BLUEMKE, DAVID · 2010 to 2017
$5.0M
Applications of Magnetic Resonance for Management of Ventricular TachycardiaK23HL089333 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI NAZARIAN, SAMAN · 2010 to 2014
$686k
A mentored training program in quantitative medical imagingK25EB003491 · NIBIB · JOHNS HOPKINS UNIVERSITY · PI CAFFO, BRIAN SCOTT · 2006 to 2008
$403k
Molecular Biomedical Imaging Laboratory (CC)ZIACL090019 · CLC · CLINICAL CENTER · PI JONES, ELIZABETH C. · 2010 to 2017
$0k
Intramural NIH HHS ZIA CL090019Intramural NIH HHS ZIA EB000072NCRR NIH HHS 1KL2RR025006-01NCRR NIH HHS KL2 RR025006NHLBI NIH HHS K23 HL089333NIBIB NIH HHS K25 EB003491
6 · The paper itself

Abstract

Current noninvasive surrogates of cardiac involvement in myotonic muscular dystrophy have low positive predictive value for sudden death. We hypothesized that the cardiac MR signal-to-noise ratio variance (SNRV) is a surrogate of the spatial heterogeneity of myocardial fibrosis and correlates with electrocardiography changes in myotonic muscular dystrophy. The SNRV for contrast enhanced cardiac MR images was calculated over the entire left ventricle in 43 patients with myotonic muscular dystrophy. All patients underwent standard electrocardiography, and a subset of 23 patients underwent signal averaged electrocardiography. After correcting for body mass index, age, and ejection fraction, SNRV was predictive of QRS duration on standard electrocardiography (1.35-msec increased QRS duration/unit increase in SNRV, P < 0.001). SNRV was also predictive of the low-amplitude late-potential duration (1.49-msec increased low-amplitude late-potential duration/unit increase in SNRV, P < 0.001). Ten-fold cross-validation yielded an area under the receiver operating characteristic curve of 0.87 for the predictive value of SNRV for QRS duration greater than 120 msec. The SNRV of the left ventricle is associated with QRS prolongation, likely due to late depolarization of tissue within islands of patchy fibrosis. The association of SNRV with future clinical events warrants further study.

Indexed as

ArtifactsContrast MediaAdultBundle-Branch BlockElectrocardiographyFemaleHeart VentriclesHumansMaleMiddle AgedMuscular DystrophiesMyotonic DystrophyPredictive Value of TestsRadiographyContrast Media

Identifiers

PMID20572151
PMCPMC3034129
OpenAlexW2074635568

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.