Key result
Exposure to 50 Hz electromagnetic interference caused pacemaker malfunction at much lower current levels in unipolar mode compared to bipolar mode, which conferred a high degree of protection.
Why the study?
Does exposure to 50 Hz extraneous electrical interference cause pacemaker malfunction in patients with implanted dual chamber pacemakers?
Population
22 patients with dual chamber pacemakers with interchangeable lead configuration
Design
Other
Authors
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Bipolar sensing may mitigate 50 Hz EMI risk; leaves open prospective trials before changing programming practice.
Does exposure to 50 Hz extraneous electrical interference cause pacemaker malfunction in patients with implanted dual chamber pacemakers?
Bipolar mode confers a high degree of protection from 50 Hz extraneous electrical interference, whereas unipolar mode is susceptible to clinically significant malfunction at lower current levels.
ASTRIDGE et al. (1993) studied Patients with dual chamber pacemakers (n=22). 50 Hz electromagnetic interference was evaluated on Pacemaker behavior (noise reversion mode, inappropriate function). Exposure to 50 Hz electromagnetic interference caused pacemaker malfunction at much lower current levels in unipolar mode compared to bipolar mode, which conferred a high degree of protection.
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