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Related Experiment Videos

[Complete branch blocks in asymptomatic patients].

J Laham, A Didier, H Ille

    Annales De Cardiologie Et D'Angeiologie
    |November 1, 1985
    PubMed
    Summary

    Complete bundle branch blocks in asymptomatic individuals rarely progress to complete A-V block before age 50. Isolated blocks without cardiovascular disease show an excellent long-term prognosis, with prolonged survival documented.

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    Area of Science:

    • Cardiology
    • Electrophysiology
    • Internal Medicine

    Context:

    • Bundle branch blocks (BBBs) are a common finding in electrocardiography.
    • Asymptomatic subjects with BBBs require careful evaluation for prognostic indicators.
    • The natural history of asymptomatic BBBs is not fully understood.

    Purpose:

    • To evaluate the long-term prognosis of asymptomatic complete bundle branch blocks.
    • To determine the progression rate of BBBs to complete atrioventricular (A-V) block.
    • To identify factors associated with favorable outcomes in patients with BBBs.

    Summary:

    • This study reviewed international literature and personal experience regarding complete bundle branch blocks in asymptomatic individuals.
    • Results indicate that complete BBBs rarely progress to complete A-V block before age 50.
    • Isolated right or left BBBs without evident cardiovascular disease are associated with an excellent long-term prognosis, with documented survival of 20–40 years.

    Impact:

    • Provides crucial information for managing asymptomatic patients with bundle branch blocks.
    • Suggests that isolated BBBs in the absence of other cardiac pathology may not necessitate aggressive intervention.
    • Highlights the generally favorable long-term outlook for a significant subset of patients diagnosed with BBBs.

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