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Pacing failure caused by automatic pacing threshold adjustment system.

Jun Kishihara1, Shinichi Niwano1, Hidehira Fukaya1

  • 1Department of Cardiovascular Medicine, Kitasato University School of Medicine, Sagamihara, Japan.

Journal of Arrhythmia
|December 20, 2017
PubMed
Summary

Ventricular capture management can fail, causing serious pacing issues. This algorithm

Keywords:
Automatic pacing threshold adjustment algorithmPacing failure

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Area of Science:

  • Cardiology
  • Biomedical Engineering

Background:

  • Ventricular capture management (VCM) is an automatic algorithm for pacing threshold adjustment.
  • VCM aims to conserve device battery while ensuring patient safety by detecting evoked responses.

Purpose of the Study:

  • To report a rare case of serious pacing failure associated with VCM.
  • To investigate potential causes for VCM algorithm weakness in a specific patient scenario.

Main Methods:

  • Case report describing a patient experiencing pacing failure.
  • Analysis of factors contributing to ventricular pacing threshold variation.

Main Results:

  • A rare instance of serious pacing failure occurred despite VCM.
  • Pacing failure was potentially linked to variations in ventricular pacing threshold.
  • Contributing factors included atrioventricular interval, daily threshold fluctuations, and steroid use.

Conclusions:

  • The VCM algorithm may have limitations.
  • Significant variations in ventricular pacing threshold can compromise VCM efficacy.
  • Clinical factors like steroid use require consideration in VCM performance.