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[2023 Annual Report of the German Pacemaker and Defibrillator Register-Part 2: Implantable cardioverter defibrillators (ICD)].

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[Symptomatic bradycardia with exitblock in a leadless pacemaker].

Andreas Hain1, Christian Hamm2, Johannes Sperzel2

  • 1Abteilung für Kardiologie/Elektrophysiologie, Kerckhoff-Klinik GmbH, Benekestr. 2-8, 61231, Bad Nauheim, Deutschland. a.hain@kerckhoff-klinik.de.

Herzschrittmachertherapie & Elektrophysiologie
|October 28, 2018
PubMed
Summary

Pacemaker dysfunction can cause bradycardial arrhythmias. The leadless Nanostim pacemaker system faced implantation halts in 2016 due to battery dysfunction issues.

Keywords:
Atrial fibrillationBattery dysfunctionBradycardiaLeadless pacemakerPacemaker dysfunction

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Area of Science:

  • Cardiology
  • Biomedical Engineering

Background:

  • Symptomatic bradycardic arrhythmias are typically managed with pacemakers.
  • Pacemaker dysfunction, including lead issues or system failure, can lead to recurrent bradycardia.
  • Leadless pacemakers offer advantages like lead-free design and less invasive implantation.

Purpose of the Study:

  • To review the causes of bradycardial arrhythmias in pacemaker patients.
  • To evaluate the specific case of the Nanostim leadless pacemaker system.
  • To understand the reasons behind the cessation of Nanostim implantations.

Main Methods:

  • Literature review on pacemaker dysfunction and bradyarrhythmias.
  • Analysis of reported issues with the Nanostim pacemaker system.
  • Examination of regulatory actions and safety communications regarding medical devices.

Main Results:

  • Pacemaker dysfunction is a significant cause of secondary bradyarrhythmias.
  • The Nanostim system, a leadless pacemaker, was introduced with potential benefits.
  • All Nanostim implantations were halted in 2016 due to identified battery dysfunction.

Conclusions:

  • Pacemaker complications necessitate ongoing monitoring and device evaluation.
  • Battery dysfunction in leadless devices like Nanostim poses a critical safety concern.
  • Technological advancements in pacemakers must prioritize long-term reliability and patient safety.