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Related Experiment Videos

Stolen heart valves?

A T Elliott1, W H Bain

  • 1Department of Clinical Physics and Bio-Engineering, Western Infirmary,Glascow.

Scottish Medical Journal
|October 1, 1987
PubMed
Summary
This summary is machine-generated.

Patients with prosthetic heart valves can trigger security alarms. Investigations confirmed the artificial valves were not the cause, and the actual source of the alarm issue was identified.

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Area of Science:

  • Biomedical Engineering
  • Cardiovascular Surgery
  • Medical Device Technology

Background:

  • A patient with prosthetic aortic and mitral valves reported frequent triggering of store security alarms.
  • The patient suspected their artificial heart valves were causing the interference.
  • This presented a diagnostic challenge to differentiate device malfunction from external factors.

Purpose of the Study:

  • To investigate the cause of repeated security alarm activations in a patient with prosthetic heart valves.
  • To determine if the prosthetic valves were indeed responsible for triggering the alarms.
  • To identify the true source of the electromagnetic interference.

Main Methods:

  • Patient history and clinical assessment.
  • Electromagnetic compatibility testing of the prosthetic valves.

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  • Systematic investigation of the security alarm systems and potential environmental interference sources.

    • Main Results:

    • Testing demonstrated that the prosthetic aortic and mitral valves did not emit electromagnetic signals capable of triggering the security alarms.
    • The investigation successfully identified an external source responsible for the alarm activations.
    • The specific source of interference was pinpointed and addressed.

    Conclusions:

    • Prosthetic heart valves are unlikely to be the cause of common store security alarm malfunctions.
    • Patient-reported symptoms require thorough investigation to rule out device issues and identify external factors.
    • This case highlights the importance of comprehensive troubleshooting for electromagnetic interference in medical device patients.