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Verdugo-Marchese M, Coiro S, Selton-Suty C, et al. Left ventricular myocardial deformation pattern, mechanical dispersion, and their relation with electrocardiogram markers in the large population-based STANISLAS cohort: insights into electromechanical coupling. Eur Heart J Cardiovasc Imaging. 2020;21(11):1237-1245doi: 10.1093/ehjci/jeaa148.
Verdugo-Marchese, M., Coiro, S., Selton-Suty, C., Kobayashi, M., Bozec, E., Lamiral, Z., Venner, C., Zannad, F., Rossignol, P., Girerd, N., & Huttin, O. (2020). Left ventricular myocardial deformation pattern, mechanical dispersion, and their relation with electrocardiogram markers in the large population-based STANISLAS cohort: insights into electromechanical coupling. European heart journal. Cardiovascular Imaging, 21(11), 1237-1245. https://doi.org/10.1093/ehjci/jeaa148
Verdugo-Marchese, Mario, et al. "Left ventricular myocardial deformation pattern, mechanical dispersion, and their relation with electrocardiogram markers in the large population-based STANISLAS cohort: insights into electromechanical coupling." European heart journal. Cardiovascular Imaging vol. 21,11 (2020): 1237-1245. doi: https://doi.org/10.1093/ehjci/jeaa148
Verdugo-Marchese M, Coiro S, Selton-Suty C, Kobayashi M, Bozec E, Lamiral Z, Venner C, Zannad F, Rossignol P, Girerd N, Huttin O. Left ventricular myocardial deformation pattern, mechanical dispersion, and their relation with electrocardiogram markers in the large population-based STANISLAS cohort: insights into electromechanical coupling. Eur Heart J Cardiovasc Imaging. 2020 Oct 20;21(11):1237-1245. doi: 10.1093/ehjci/jeaa148. PMID: 32577743.
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Eur Heart J Cardiovasc Imaging. 2020 Oct 20;21(11):1237-1245. doi: 10.1093/ehjci/jeaa148.

Left ventricular myocardial deformation pattern, mechanical dispersion, and their relation with electrocardiogram markers in the large population-based STANISLAS cohort: insights into electromechanical coupling.

European heart journal. Cardiovascular Imaging

Mario Verdugo-Marchese, Stefano Coiro, Christine Selton-Suty, Masatake Kobayashi, Erwan Bozec, Zohra Lamiral, Clément Venner, Faiez Zannad, Patrick Rossignol, Nicolas Girerd, Olivier Huttin

Affiliations

  1. Département coeur-vaisseaux, Centre Hospitalier Universitaire Vaudois (CHUV), Rue du Bugnon 46, 1011 Lausanne, Switzerland.
  2. Université de Lorraine, INSERM, Centre d'Investigations Cliniques Plurithématique 1433, CHRU de Nancy, Inserm U1116, Rue du Morvan, 54500 Vandœuvre-lès-Nancy, France.
  3. FCRIN INI-CRCT (Cardiovascular and Renal Clinical Trialists) Network, Rue du Morvan, 54500 Vandœuvre-lès-Nancy, France.
  4. Division of Cardiology, University of Perugia, Ospedale S. Maria della Misericordia, Piazzale Giorgio Menghini, 1, 06129 Perugia PG, Italy.
  5. Service de Cardiologie, Institut Lorrain du Cœur et des Vaisseaux, Centre Hospitalier Universitaire de Nancy, Rue du Morvan, 54500 Vandœuvre-lès-Nancy, France.

PMID: 32577743 DOI: 10.1093/ehjci/jeaa148

Abstract

AIMS: Mechanical alterations in patients with electrical conduction abnormalities are reported to have prognostic value in patients with left ventricular asynchrony or long QT syndrome beyond electrocardiogram (ECG) variables. Whether conduction and repolarization patterns derived from ECG are associated with speckle tracking echocardiography parameters in subjects without overt cardiac disease is yet to be investigated. To report ranges of longitudinal deformation according to conduction and repolarization values in a population-based cohort.

METHODS AND RESULTS: One thousand, one hundred, and forty subjects (48.6 ± 14.0 years, 47.7% men) enrolled in the fourth visit of the STANISLAS cohort (Lorraine, France) were studied. Echocardiography strain was performed in all subjects. RR, PR, QRS, and QT intervals were retrieved from digitalized 12-lead ECG. Echocardiographic data were stratified according to quartiles of QRS and QTc duration values. Full-wall global longitudinal strain (GLS) was -21.1 ± 2.5% with a mechanical dispersion (MD) value of 34 ± 12 ms. Absolute GLS value was lower in the longest QRS quartile and shortest QTc quartile (both P < 0.001). Time-to-peak of strain was not significantly different according to QRS duration although significantly higher in patients with higher QTc (P < 0.001). MD was significantly greater in patients with longer QTc (32 ± 12 ms for QTc < 396 ms vs. 36 ± 12 ms for QTc > 421 ms; P = 0.002).

CONCLUSION: Longer QTc is related to increased MD and better longitudinal strain values. In a population-based setting, QRS is not associated with MD, suggesting that echocardiography-based dyssynchrony does not largely overlap with ECG-based dyssynchrony.

Published on behalf of the European Society of Cardiology. All rights reserved. © The Author(s) 2020. For permissions, please email: [email protected].

Keywords: electromechanical coupling; left ventricle; mechanical dispersion; myocardial deformation; population study; speckle tracking echocardiography; systolic function

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