Global Electrical Heterogeneity: Mechanisms and Clinical Significance

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Scopus citations

    Abstract

    This review summarizes recent findings and discusses a clinical significance of a vectorcardiographic (VCG) Global electrical heterogeneity (GEH). GEH concept is based on the concept of the spatial ventricular gradient (SVG), which is a global measure of the dispersion of total recovery time. We quantify GEH by measuring five features of the SVG vector (SVG magnitude, direction (azimuth and elevation), a scalar value, and spatial QRS-T angle) on orthogonal XYZ ECG. In analysis of more than 20,000 adults we showed that GEH is independently associated with sudden cardiac death (SCD) after adjustment for demographics, cardiovascular disease (time-updated incident non-fatal cardiovascular events [coronary heart disease, heart failure, stroke, atrial fibrillation, use of beta-blockers], and known risk factors [cholesterol, triglycerides, physical activity index, smoking, diabetes, obesity, hypertension, antihypertensive medications, creatinine, alcohol intake, left ventricular ejection fraction, and time-updated ECG metrics (heart rate, QTc, QRS duration, ECG-left ventricular hypertrophy, bundle branch block or interventricular conduction delay)]. This finding suggests that GEH represents an independent electrophysiological substrate of SCD.

    Original languageEnglish (US)
    Title of host publicationComputing in Cardiology Conference, CinC 2018
    PublisherIEEE Computer Society
    ISBN (Electronic)9781728109589
    DOIs
    StatePublished - Sep 2018
    Event45th Computing in Cardiology Conference, CinC 2018 - Maastricht, Netherlands
    Duration: Sep 23 2018Sep 26 2018

    Publication series

    NameComputing in Cardiology
    Volume2018-September
    ISSN (Print)2325-8861
    ISSN (Electronic)2325-887X

    Conference

    Conference45th Computing in Cardiology Conference, CinC 2018
    CountryNetherlands
    CityMaastricht
    Period9/23/189/26/18

    ASJC Scopus subject areas

    • Computer Science(all)
    • Cardiology and Cardiovascular Medicine

    Fingerprint Dive into the research topics of 'Global Electrical Heterogeneity: Mechanisms and Clinical Significance'. Together they form a unique fingerprint.

  • Cite this

    Tereshchenko, L. G. (2018). Global Electrical Heterogeneity: Mechanisms and Clinical Significance. In Computing in Cardiology Conference, CinC 2018 [8743667] (Computing in Cardiology; Vol. 2018-September). IEEE Computer Society. https://doi.org/10.22489/CinC.2018.165