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Related Experiment Videos

Clinical experience with the rate responsive pacemaker Sensolog 703.

K Kubisch1, W Peters, I Chiladakis

  • 1Department of Cardiology and Angiology, Westfälische Wilhelms-Universität Münster, West Germany.

Pacing and Clinical Electrophysiology : PACE
|November 1, 1988
PubMed
Summary

Rate-responsive pacemakers using activity-triggered piezo-quartz sensors are crucial for managing bradyarrhythmias. This study found that programming these devices using daily activities like walking is effective, reducing the need for treadmill testing.

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Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Medical Devices

Background:

  • Rate-responsive pacemaker systems are vital for managing pathological bradyarrhythmias.
  • Activity-triggered sensors, utilizing piezo-quartz to convert mechanical to electrical energy, are increasingly important.
  • These systems aim to optimize heart rate based on metabolic demands, independent of atrial electrograms.

Purpose of the Study:

  • To evaluate the efficacy of programming the Sensolog 703 pacemaker using daily activities.
  • To determine if treadmill ergometry is essential for optimal pacemaker programming.
  • To assess the performance of activity-triggered pacemaker sensors in patients with bradyarrhythmias.

Main Methods:

  • Thirty-five patients with pathological bradyarrhythmias received the Sensolog 703 pacemaker.

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  • Clinical follow-up involved treadmill ergometry, flat ground walking, and stair climbing.
  • Pacemaker programming was adjusted using histogram and rateread functions, with 24-hour Holter-ECG for control.

    • Main Results:

    • Initial programming with treadmill ergometry led to excessively high stimulation rates.
    • Programming using walking and stair climbing allowed effective adjustment of rate-adaptive parameters.
    • Reprogramming was only needed if the pacemaker was initially set using treadmill ergometry.
    • Pacemaker rate increased due to non-exercise-related vibrations, such as car driving.

    Conclusions:

    • Programming rate-responsive pacemakers with daily activities is a viable alternative to treadmill ergometry.
    • Activity-triggered sensors can be effectively programmed using simple, everyday movements.
    • Careful consideration of environmental factors like vibrations is necessary for optimal pacemaker function.