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Left ventricular hypertrophy in left bundle branch block.

L M Noble, S B Humphrey, G B Monaghan

    Journal of Electrocardiology
    |April 1, 1984
    PubMed
    Summary
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    Detecting left ventricular hypertrophy (LVH) with left bundle branch block (LBBB) is challenging. This study found LVH in 89% of LBBB patients, with ECG and chest X-ray criteria predicting its presence.

    Area of Science:

    • Cardiology
    • Medical Imaging
    • Clinical Diagnostics

    Background:

    • Left ventricular hypertrophy (LVH) detection is complicated by left bundle branch block (LBBB).
    • Previous studies lacked data on LVH prevalence and significance in living patients with LBBB.

    Purpose of the Study:

    • To determine the prevalence of anatomic LVH in patients with LBBB.
    • To assess electrocardiogram (ECG) and chest X-ray criteria as predictors of LVH in this population.

    Main Methods:

    • M-mode echocardiography was used to diagnose LVH in 28 patients with LBBB.
    • ECG and chest X-ray findings were analyzed for their predictive value.

    Main Results:

    • Anatomic LVH was detected in 89% of patients via echocardiography.

    Related Experiment Videos

  • Left atrial abnormality on ECG and a cardio-thoracic ratio > 0.50 were the strongest LVH predictors.
  • 78.5% of patients had hypertension and/or ischemic heart disease.

    • Conclusions:

    • LVH is highly prevalent in patients with LBBB.
    • Specific ECG and chest X-ray findings can aid in predicting LVH in LBBB.
    • Most LBBB patients exhibit underlying cardiovascular disease.