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Magnetic Interference on Cardiac Implantable Electronic Devices From Apple iPhone MagSafe Technology
Fahd Nadeem1, Arismendy Nunez Garcia1, Cao Thach Tran1
1Division of Cardiology Department of Medicine Lifespan Cardiovascular Institute and Brown University Providence RI.
Journal of the American Heart Association
|June 2, 2021
Summary
Apple
Area of Science:
- Biomedical Engineering
- Cardiology
- Electrophysiology
Background:
- Magnet wireless charging, including Apple's MagSafe, is increasingly common in smartphones.
- MagSafe technology generates magnetic field strengths exceeding 50 gauss.
- Potential for magnetic interference with cardiac implantable electronic devices (CIEDs) is a growing concern.
Purpose of the Study:
- To investigate the clinical significance of magnetic interference from Apple's MagSafe on CIEDs.
- To assess the impact of iPhone 12 Pro Max's MagSafe on CIED function.
Main Methods:
- In vivo study: iPhone 12 Pro Max placed on patients with existing CIEDs, with effects monitored via device interrogation.
- Ex vivo study: CIEDs from major manufacturers tested for magnetic interference from iPhone 12 Pro Max in unopened packages.
Main Results:
- 100% of in vivo participants (3/3) experienced clinically identifiable magnetic interference.
- 72.7% of ex vivo devices (8/11) showed magnetic interference when exposed to the iPhone 12 Pro Max.
Conclusions:
- Apple's iPhone 12 Pro Max MagSafe technology demonstrably causes magnetic interference with CIEDs.
- This interference has the potential to inhibit life-saving therapies delivered by CIEDs.
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