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Related Experiment Videos

Appropriate result from an inappropriate ICD shock.

Darryl R Davis1, Michael H Gollob, Martin S Green

  • 1University of Ottawa Heart Institute, Ottawa, Ontario, Canada.

Pacing and Clinical Electrophysiology : PACE
|October 14, 2006
PubMed
Summary

An implantable cardioverter defibrillator (ICD) inappropriately detected external AC current, delivering a life-saving shock. This shock safely disconnected the patient from the electrical source, preventing electrocution.

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Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Electrophysiology

Background:

  • Implantable cardioverter defibrillators (ICDs) are crucial for managing life-threatening arrhythmias.
  • External electrical interference can potentially affect ICD function.
  • Ensuring device safety and appropriate response to environmental factors is paramount.

Observation:

  • A patient with an ICD experienced inappropriate detection of an ungrounded external alternating current (AC).
  • The device interpreted the external AC as a cardiac event requiring intervention.

Findings:

  • The ICD delivered a shock in response to the detected external AC current.
  • This shock successfully dislodged the patient from the electrical source.

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Implications:

  • This case highlights the potential for external electrical sources to trigger ICDs.
  • Device programming and patient education are critical to mitigate risks associated with environmental electrical interference.
  • Understanding such events is vital for improving ICD safety and reliability.