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[THE FEATURES OF STRUCTURE-FUNCTIONAL HEART CONDITION IN OLDER PATIENTS WITH UNSTABLE ANGINA AND LEFT BUNDLE BRANCH

V M Baev, E V Lantsova, D B Kozlov

    Advances in Gerontology = Uspekhi Gerontologii
    |September 23, 2015
    PubMed

    Insights

    Left bundle branch block (LBBB) in unstable angina (UA) patients is linked to significant cardiac remodeling and dysfunction. Echocardiography reveals distinct hemodynamic changes and diastolic dysfunction in these patients.

    Area of Science:

    • Cardiology
    • Cardiac Imaging
    • Clinical Medicine

    Context:

    • Unstable angina (UA) is a critical condition requiring prompt diagnosis and management.
    • Left bundle branch block (LBBB) is a common electrocardiographic finding that can complicate UA diagnosis and prognosis.
    • Echocardiography is a vital tool for assessing cardiac structure and function.

    Purpose:

    • To compare echocardiographic parameters in older patients with UA and LBBB versus those with UA alone.
    • To identify specific cardiac structural and functional changes associated with LBBB in the context of UA.
    • To elucidate the hemodynamic and diastolic function differences in UA patients with and without LBBB.

    Summary:

    • Analysis of 56 older patients with UA and LBBB compared to 186 with UA without LBBB revealed significant cardiac remodeling in the LBBB group.
    • Patients with UA and LBBB showed increased aortic diameter, left ventricular dimensions (LVIDs, LVIDd), interventricular septum (IST), posterior wall thickness (PWT), and reduced left (LP) and right ventricular (RV) cavities.
    • Left ventricular dysfunction, diastolic dysfunction with delayed relaxation, and altered hemodynamics (increased LV stroke volume, decreased ejection fraction) were observed in UA patients with LBBB, without evidence of valvular obstruction.

    Impact:

    • Findings highlight the detrimental impact of LBBB on cardiac structure and function in UA patients.
    • Echocardiographic data provides insights into the pathophysiology of UA in the presence of LBBB.
    • This research can inform risk stratification and management strategies for UA patients with LBBB.

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