Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 10/27/2025

EEG Safety in Patients with Pacemakers

Key Safety Considerations

  • EEG does not generate electromagnetic interference (EMI) that would affect pacemaker function, according to the American Society of Anesthesiologists (ASA) 1, 2, 3
  • There is no evidence of device interference between pacemakers and medical devices used for recording electrical activity, such as EEG, as reported in Gastroenterology 4
  • Manufacturer warnings about the presence of implanted electromedical devices as contraindications for certain procedures lack clinical support for passive diagnostic tests like EEG, as noted in Gastroenterology 4

Procedures Requiring Precautions

  • Electrocautery requires consideration of bipolar systems, short intermittent bursts, and possible device reprogramming, as recommended by the American Society of Anesthesiologists (ASA) 1, 2, 3
  • Radiofrequency ablation requires maintaining distance from the pulse generator and leads, according to the American Society of Anesthesiologists (ASA) 2, 3
  • MRI is generally contraindicated unless the device is MRI-conditional, as stated by the American Society of Anesthesiologists (ASA) 1, 2
  • Radiation therapy requires the device to be outside the radiation field, as recommended by the American Society of Anesthesiologists (ASA) 1

Standard Monitoring

  • Routine ECG monitoring should be performed as standard practice for any patient with a pacemaker undergoing medical procedures, allowing detection of any pacemaker or cardiac dysfunction, as recommended by the American Society of Anesthesiologists (ASA) 2, 3
  • No device reprogramming is needed for EEG, unlike procedures with significant EMI risk, as stated by the American Society of Anesthesiologists (ASA) 1, 2, 3