Evidence map›Paper›PMID 28111363›Full record

Observational studyJournal of the American Heart Association2017

Diffuse Myocardial Fibrosis Reduces Electrocardiographic Voltage Measures of Left Ventricular Hypertrophy Independent of Left Ventricular Mass.

Maren Maanja, Björn Wieslander, Todd T Schlegel, Ljuba Bacharova, Hussein Abu Daya, Yaron Fridman, Timothy C Wong, Erik B Schelbert, Martin Ugander

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in Journal of the American Heart Association, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.6field-weighted citation impact, top 6% 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

21 citing papers in PubMed, 58 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Accurate diagnosis of apical hypertrophic cardiomyopathy using explainable advanced electrocardiogram analysis.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2024
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Observational
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. IFITM3 protects the heart during influenza virus infection.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  18. Cornell product in an electrocardiogram is related to reduced LV regional wall motion.Hypertension research : official journal of the Japanese Society of Hypertension · 2019
    Article
  19. Electrocardiographic criteria for cardiac remodeling in hypertensive patients.Journal of clinical hypertension (Greenwich, Conn.) · 2019
    Article
  20. Review
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

9 authors at 4 institutions in 3 countries.

Maren MaanjaDepartment of Clinical Physiology, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden.
Björn WieslanderDepartment of Clinical Physiology, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden.
Todd T SchlegelDepartment of Clinical Physiology, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden.
Ljuba BacharovaInternational Laser Center, Bratislava, Slovak Republic.
Hussein Abu DayaDepartment of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA.
Yaron FridmanDepartment of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA.
Timothy C WongDepartment of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA.
Erik B SchelbertDepartment of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA.
Martin UganderDepartment of Clinical Physiology, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden martin@ugander.com.
University of Pittsburgh Medical Center · USKarolinska Institutet · SEComenius University Bratislava · SKKarolinska University Hospital · SE

Funding

UNIVERSITY OF PITTSBURGH CLINICAL AND TRANSLATIONAL SCIENCE INSTITUTE: BPCAUL1RR024153 · NCRR · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI REIS, STEVEN E · 2006 to 2011
$73.9M
NCRR NIH HHS UL1 RR024153
6 · The paper itself

Abstract

backgroundMyocardial fibrosis quantified by myocardial extracellular volume fraction (ECV) and left ventricular mass (LVM) index (LVMI) measured by cardiovascular magnetic resonance might represent independent and opposing contributors to ECG voltage measures of left ventricular hypertrophy (LVH). Diffuse myocardial fibrosis can occur in LVH and interfere with ECG voltage measures. This phenomenon could explain the decreased sensitivity of LVH detectable by ECG, a fundamental diagnostic tool in cardiology. METHODS AND

resultsWe identified 77 patients (median age, 53 [interquartile range, 26-60] years; 49% female) referred for contrast-enhanced cardiovascular magnetic resonance with ECV measures and 12-lead ECG. Exclusion criteria included clinical confounders that might influence ECG measures of LVH. We evaluated ECG voltage-based LVH measures, including Sokolow-Lyon index, Cornell voltage, 12-lead voltage, and the vectorcardiogram spatial QRS voltage, with respect to LVMI and ECV. ECV and LVMI were not correlated (R

conclusionsMyocardial mass and diffuse myocardial fibrosis have independent and opposing effects upon ECG voltage measures of LVH. Diffuse myocardial fibrosis quantified by ECV can obscure the ECG manifestations of increased LVM. This provides mechanistic insight, which can explain the limited sensitivity of the ECG for detecting increased LVM.

Indexed as

AdultCardiomyopathiesCross-Sectional StudiesElectrocardiographyFemaleFibrosisHeartHumansHypertrophy, Left VentricularMagnetic Resonance ImagingMagnetic Resonance Imaging, CineMaleMiddle AgedMyocardiumYoung Adultelectrocardiographyextracellular matrixhypertrophyleft ventricularmagnetic resonance imaging

Identifiers

PMID28111363
PMCPMC5523623
OpenAlexW2580252759

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.