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Related Experiment Videos

[Physical performance with rate-responsive pacemakers].

M Solèr, P Erne, M Pfisterer

    Schweizerische Medizinische Wochenschrift
    |November 15, 1986
    PubMed
    Summary
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    The Medtronic Activitrax rate-responsive pacemaker significantly boosts exercise heart rate and physical work capacity in patients. This improvement in working capacity was sustained for two weeks, benefiting those with inadequate heart rate response.

    Area of Science:

    • Cardiology
    • Biomedical Engineering

    Context:

    • Pacemaker technology advancements
    • Management of bradycardia and chronotropic incompetence

    Purpose:

    • To evaluate the acute and short-term effects of the Medtronic Activitrax rate-responsive pacemaker on exercise hemodynamics and capacity.
    • To compare the performance of the Activitrax pacemaker in activity mode versus VVI-mode during exercise.

    Summary:

    • The study assessed 10 patients using the Medtronic Activitrax pacemaker.
    • Compared to VVI-mode, the activity mode showed a significant increase in maximal exercise heart rate (102.1 to 115.8 bpm, p<0.05).
    • Physical work capacity also significantly increased (343 to 528 watts x min, p<0.02) and this effect persisted for two weeks.

    Impact:

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    • Demonstrates the efficacy of rate-responsive pacing in enhancing exercise performance.
    • Highlights the potential of the Medtronic Activitrax pacemaker to improve quality of life for patients with chronotropic issues.
    • Provides evidence for improved working capacity in patients previously limited by inadequate heart rate response during physical activity.