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Related Experiment Videos

Maintaining physiological pacing in AV block using a new generation single lead VDD pacemaker

C Lau1, S C Nishimura, A W Harrison

  • 1Division of Cardiology, Sunnybrook Health Science Centre, University of Toronto, Ontario.

The Canadian Journal of Cardiology
|June 1, 1996
PubMed
Summary

This study shows that a new VDD pacemaker with a single pass lead reliably provides AV synchronous pacing for patients with AV block. The system improved patient well-being and demonstrated stable performance during follow-up.

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Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Medical Devices

Background:

  • Atrioventricular (AV) block necessitates pacing to restore cardiac rhythm.
  • Traditional pacing systems may involve multiple leads, increasing procedural complexity.
  • The development of integrated pacing systems aims to improve patient outcomes and device performance.

Purpose of the Study:

  • To prospectively evaluate the efficacy and safety of a novel VDD pacing system utilizing a single pass lead.
  • To assess the reliability of AV synchronous pacing and atrial sensing with this new technology.
  • To determine the impact of the VDD pacing system on patient quality of life.

Main Methods:

  • A prospective study involving 15 patients with AV block implanted with a THERA VDD 8948 pacemaker and 5032 single pass lead.

Related Experiment Videos

  • Regular follow-up assessments included P wave sensing, ventricular thresholds, and 24-hour Holter monitoring.
  • Exercise testing, provocative maneuvers, and quality of life questionnaires were used to evaluate device performance and patient well-being.

    • Main Results:

    • The VDD pacing system demonstrated reliable AV synchronous pacing in 14 out of 15 patients.
    • Atrial sensing proved reliable during provocative tests and exercise.
    • Ventricular thresholds remained stable, and a significant improvement in patient quality of life was observed.

    Conclusions:

    • The new generation VDD pacemaker with a single pass lead offers reliable AV synchronous pacing for patients with AV block and normal sinus node function.
    • This pacing system contributes to improved patient well-being.
    • The single pass lead design simplifies implantation while maintaining effective pacing and sensing capabilities.