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Related Experiment Videos

Electrocardiographic "pacemaker pseudo-spikes" and radio frequency interference

M J Cleland1, E T Crosby

  • 1Biomedical Engineering Department, Ottawa General Hospital, Ontario, Canada.

Canadian Journal of Anaesthesia = Journal Canadien D'Anesthesie
|July 1, 1997
PubMed
Summary

Radiofrequency interference (RFI) can mimic pacemaker malfunction on ECG monitors, posing a risk in critical care. Awareness and troubleshooting are key to ensuring patient safety and accurate monitoring.

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Area of Science:

  • Critical Care Medicine
  • Biomedical Engineering
  • Electrophysiology

Background:

  • Radiofrequency interference (RFI) is an increasing concern in healthcare environments due to the proliferation of wireless devices.
  • Hospitals utilize antennas and repeaters to enhance signal quality for communication devices, which can be situated near patient care areas.

Observation:

  • A case involving a 74-year-old woman with a pacemaker presented with apparent pacemaker malfunction on a cardiac monitor post-spinal surgery.
  • The monitor displayed graphic evidence suggesting malfunction, but the patient showed no adverse clinical effects.

Findings:

  • Biomedical investigation concluded that the monitor was misinterpreting RFI signals as abnormal pacemaker activity.
  • The RFI was interpreted as pacemaker spikes, leading to a false diagnosis of pacemaker malfunction.

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Implications:

  • Increased use of portable communication devices heightens the risk of RFI in hospitals.
  • Patient monitors may erroneously interpret RFI as patient-generated signals, leading to inaccurate data.
  • Strategies for troubleshooting and mitigating RFI are crucial for maintaining the integrity of patient monitoring in critical care settings.