Wegner Felix K, Korthals Dennis, Kreimer Fabienne, Wolfes Julian, Ellermann Christian, Martinovic Moritz, Kittl Christoph, Frommeyer Gerrit, Eckardt Lars
Department of Cardiology II-Electrophysiology, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany.
Department of Trauma, Hand and Reconstructive Surgery, University Hospital Muenster, Muenster, Germany.
Europace. 2025 Aug 4;27(8). doi: 10.1093/europace/euaf170.
Wireless charging capable smartphones may interact with cardiac implantable electronic devices (CIED). We hypothesized that magnetic shielding with a steel plate placed at the back of a smartphone may prevent interaction.
Sixteen CIED (6 pacemakers and 10 implantable cardioverters/defibrillators) from all manufacturers were consecutively implanted in a subcutaneous and submuscular location in an isolated porcine thorax and connected to an interactive heart simulator. Two smartphones (Apple iPhone 14 and Google Pixel 8 Pro) were placed on top of the implantation site, and signs of magnet mode induction were recorded. The Apple iPhone induced magnet mode in seven of 16 (44%) subcutaneously placed CIED. Placed in a magnetic phone case, the Apple iPhone induced magnet mode in six of 16 (38%) devices. Magnet mode induction was successfully prevented in all cases by placing a 1 mm thin steel plate at the back of the smartphone. The Google Pixel did not induce magnet mode in any of the 16 devices, even with a magnetic case. Submuscular CIED placement resulted in no occurrence of magnet mode induction by any smartphone. All devices were still able to be interrogated and responded to a CIED magnet.
The Apple iPhone induces magnet mode in close to half of subcutaneously placed CIED due to its MagSafe magnet. Neither a smartphone utilizing the Qi wireless charging standard nor magnetic smartphone cases confer the same risk. Submuscular CIED placement or magnetic shielding with a steel plate prevents magnet mode induction. The future Qi2.0 standard may exacerbate interaction risks.
具备无线充电功能的智能手机可能会与心脏植入式电子设备（CIED）发生相互作用。我们假设在智能手机背面放置一块钢板进行磁屏蔽可以防止相互作用。
来自所有制造商的16台CIED（6台起搏器和10台植入式心律转复除颤器）连续植入隔离猪胸壁的皮下和肌肉下位置，并连接到交互式心脏模拟器。将两部智能手机（苹果iPhone 14和谷歌Pixel 8 Pro）放置在植入部位上方，记录磁模式感应迹象。苹果iPhone在16台皮下植入的CIED中的7台（44%）中诱发了磁模式。放在磁性手机壳中时，苹果iPhone在16台设备中的6台（38%）中诱发了磁模式。通过在智能手机背面放置一块1毫米厚的钢板，在所有情况下都成功防止了磁模式感应。谷歌Pixel在16台设备中的任何一台中都没有诱发磁模式，即使使用磁性手机壳。肌肉下植入CIED后，任何智能手机都未诱发磁模式。所有设备仍能够被问询并对CIED磁铁做出响应。
苹果iPhone因其MagSafe磁铁在近一半的皮下植入CIED中诱发磁模式。使用Qi无线充电标准的智能手机或磁性手机壳都不会带来同样的风险。肌肉下植入CIED或用钢板进行磁屏蔽可防止磁模式感应。未来的Qi2.0标准可能会加剧相互作用风险。
