Interactions between electronic article surveillance systems and implantable cardioverter-defibrillators

Area of Science:

• Cardiology
• Biomedical Engineering
• Medical Devices

Background:

• Inappropriate shocks from implantable cardioverter-defibrillators (ICDs) have been linked to electronic article surveillance (EAS) systems.
• The specific risks associated with ICDs when patients pass through or linger near EAS systems need further clarification.

Purpose of the Study:

• To assess the safety of ICD function when patients walk through or are exposed to EAS systems.
• To investigate potential interactions between ICDs and EAS systems that could lead to adverse events.

Main Methods:

• 170 subjects with ICDs were evaluated during a brief walk-through and prolonged exposure (2 minutes within 6 inches) to three common EAS systems.
• ICD function was monitored during these exposures, including scenarios with ICD pacing.

Main Results:

• No negative effects on ICD function were observed during a 10- to 15-second walk-through of EAS systems.
• Interactions occurred in 19 out of 169 subjects during prolonged exposure; 7 of these were clinically relevant, with a possibility of inappropriate ICD shocks.
• 12 subjects experienced minor interactions.

Conclusions:

• Walking through EAS systems is safe for patients with ICDs.
• Prolonged exposure or lingering near EAS systems can potentially trigger inappropriate ICD shocks.