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Initial experience with physiological pacing.

M J Davis, G C Mews, G D Cope

    Australian and New Zealand Journal of Medicine
    |April 1, 1985
    PubMed
    Summary
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    Rate-responsive dual chamber pacemakers are safe and effective for most patients, improving symptoms with infrequent complications. This pacing method is recommended for individuals with normal sinoatrial function needing a permanent pacemaker.

    Area of Science:

    • Cardiology
    • Biomedical Engineering

    Background:

    • Permanent pacemakers are crucial for managing bradyarrhythmias.
    • Rate-responsive pacing aims to optimize cardiac output based on physiological demand.
    • Dual-chamber pacing maintains atrioventricular synchrony.

    Purpose of the Study:

    • To evaluate the safety and efficacy of permanent rate-responsive dual chamber pacemakers.
    • To assess the benefits and complications of this pacing technique.
    • To determine patient outcomes and symptom improvement.

    Main Methods:

    • Prospective study of 50 patients with permanent rate-responsive dual chamber pacemakers.
    • Follow-up duration of 14.1 months.
    • Analysis of implantation complications, lead issues, arrhythmias, and patient symptoms.

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    Main Results:

    • Minor implantation complications occurred in 1 patient.
    • Lead repositioning was needed in 10 patients (5 atrial, 5 ventricular).
    • Two patients experienced symptomatic pacemaker-related arrhythmias; 36 of 43 living patients were asymptomatic, and 6 were symptomatically improved.

    Conclusions:

    • Rate-responsive dual chamber pacing is safe and generally improves symptoms.
    • Complications are infrequent and manageable.
    • This pacing mode is a viable option for patients with normal sinoatrial function requiring a permanent pacemaker.