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Transthoracic Speckle Tracking Echocardiography for the Quantitative Assessment of Left Ventricular Myocardial Deformation
09:05

Transthoracic Speckle Tracking Echocardiography for the Quantitative Assessment of Left Ventricular Myocardial Deformation

Published on: October 20, 2016

QRS dispersion: an electrocardiographic index of systolic left ventricular dysfunction in patients with left bundle

Evaggelos Kountouris, Panagiotis Korantzopoulos, Pavlos Karanikis

    International Journal of Cardiology
    |October 2, 2004
    PubMed

    Insights

    Complete left bundle branch block (LBBB) can impair left ventricular (LV) systolic function in heart failure patients. QRS dispersion (QRSD) effectively predicts LV systolic dysfunction, serving as a valuable screening tool.

    Area of Science:

    • Cardiology
    • Electrocardiography
    • Cardiac Electrophysiology

    Background:

    • Congestive heart failure (CHF) patients with complete left bundle branch block (LBBB) may experience impaired left ventricular (LV) systolic function.
    • The predictive value of QRS duration (QRSd) and QRS dispersion (QRSD) for LV systolic performance in LBBB patients requires further evaluation.

    Discussion:

    • This study investigated the relationship between electrocardiographic parameters (QRSd and QRSD) and LV systolic function in 130 patients with complete LBBB.
    • Ejection fraction was assessed using standard echocardiography, alongside measurements of QRSd and QRSD.

    Key Insights:

    • QRS dispersion (QRSD) demonstrates a strong correlation with left ventricular (LV) contractility in patients with complete left bundle branch block (LBBB).
    • QRSD emerges as a significant predictor of LV systolic dysfunction.

    Outlook:

    • The findings suggest that QRSD can serve as a simple and effective electrocardiographic screening test for identifying patients with LV systolic dysfunction.
    • Further research may explore the integration of QRSD into clinical decision-making for heart failure management in LBBB patients.

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