Electric cars and high power chargers: Are they safe for patients with cardiac implantable electronic devices?

Abstract Funding Acknowledgements Type of funding sources: Public Institution(s). Main source(s): Deutsche Stiftung für Herzforschung research grant Background Electromagnetic interference (EMI) poses a risk to patients with cardiac implantable devices (CIEDs) and can result in device malfunction including pacing inhibition or inappropriate shock therapy. Such EMI sources are ubiquitous the modern world. Battery electric vehicles (BEVs) represent such potential source. We have previously investigated driving eCars found that largest electromagnetic field is located along charging cable. New high power chargers deliver higher currents (facilitating rapid recharging), potentially associated greater fields for clinically relevant EMI. This present study aims evaluate this EMI-risk address important question. Methods A consecutive group 130 range CIEDs were recruited participate. After complete interrogation each had their programmed optimise detection ensured ventricular ICD therapies disabled. Under continuous 6-lead ECG monitoring patient then plugged charged four different BEVs (Porsche Taycan Turbo, VW ID3 pro, Tesla Model 3 Audi e-tron 55 Quattro) addition ‘dummy’ eCar (which permitted maximal flow 350kW) cable placed directly over device. During both magnetic was measured. further performed spontaneous reprogramming tachycardia detection. Results In total 561 separate events by one dummy car. The 38.65µT at column 77.9µT. There no incidences EMI, specifically there due oversensing, over-detection. results patient-based 0% (95% CI; - 2.8%) event-based 0.6%). Conclusions Discussion induced during use charger technology BEV despite programming placement being optimised worst-case scenario maximising chance clinical Our suggests very low risk, if any, posed new chargers. CIED should reassured safe. would still recommend not place above maximise safety charging.