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Related Experiment Videos

[Atrioventricular "sequential" stimulation by implantable "bifocal" stimulator]

S Lévy, J M Jausseran, C Boyer

    Archives Des Maladies Du Coeur Et Des Vaisseaux
    |December 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

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    The bifocal pacemaker successfully mimics natural heart rhythm, offering atrial pacing benefits without inefficiency in atrioventricular block. This new pacemaker proved effective in treating various cardiac conditions.

    Area of Science:

    • Cardiology
    • Biomedical Engineering

    Context:

    • Atrial stimulation offers benefits but can be inefficient with atrioventricular block.
    • Sequential stimulation aims to replicate the physiological atrio-ventricular sequence.

    Purpose:

    • To evaluate the efficacy and safety of a novel bifocal pacemaker.
    • To assess its performance in patients with sinus node disease, supraventricular arrhythmias, and cardiomyopathy.

    Summary:

    • The bifocal pacemaker was implanted endocavity in 12 patients, demonstrating effective symptom treatment.
    • Preliminary results after 2-24 months showed one ventricular electrode displacement, no atrial displacement, and one battery depletion at 19 months.
    • The device was particularly effective in patients without supraventricular arrhythmias.

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    Impact:

    • The bifocal pacemaker offers a viable solution for sinus node disease, supraventricular arrhythmias with conduction disorders, and myocardial dysfunction.
    • It provides advantages of atrial pacing while overcoming limitations associated with atrioventricular block.
    • This technology may improve cardiac output contribution in patients with impaired myocardial function.