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Related Experiment Videos

Testing of work environments for electromagnetic interference.

D Marco1, G Eisinger, D L Hayes

  • 1Siemens Pacesetter, Sylmar, California.

Pacing and Clinical Electrophysiology : PACE
|November 1, 1992
PubMed
Summary
This summary is machine-generated.

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Pacemaker patients can potentially return to work near electromagnetic interference (EMI) sources. New testing methods using event records show specific arc welding machines up to 1,000 A do not affect pacemakers.

Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Occupational Health

Background:

  • Pacemaker implantation presents challenges for patients returning to work environments with electromagnetic interference (EMI).
  • Current practices often restrict pacemaker patients from occupations involving potential EMI exposure, such as electric welding.

Purpose of the Study:

  • To evaluate the safety of pacemaker patients returning to work in environments with potential EMI.
  • To assess the efficacy of a novel monitoring method using pacemaker event records for EMI assessment.

Main Methods:

  • Tested 12 work environments and utilized Siemens Pacesetter pacemaker event records for monitoring.
  • Employed surface ECGs, intracardiac electrograms, and digital monitors for verification.
  • Conducted 21 in vivo and in vitro tests across various EMI sources, including arc welding machines and degaussing coils.

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Main Results:

  • Event records proved accurate and useful for in vivo and in vitro EMI monitoring.
  • Arc welding machines up to 225 A did not affect tested pacemakers.
  • Higher amperage arc welding (1,000 A+), high-frequency voltage, and industrial degaussing coils demonstrated inhibitory effects within specific proximity limits.

Conclusions:

  • The event record monitoring method is an effective tool for assessing pacemaker function in EMI environments.
  • Physicians can make informed decisions about return-to-work for pacemaker patients based on specific EMI testing.
  • Results are specific to the tested pacemaker models and EMI conditions.