de Cock C C, Spruijt H J, van Campen L M, Plu A W, Visser C A
Department of Cardiology, University Hospital VU, Amsterdam, The Netherlands.
Pacing Clin Electrophysiol. 2000 Oct;23(10 Pt 1):1516-8. doi: 10.1046/j.1460-9592.2000.01516.x.
Electromagnetic interference of pacemaker systems has been well established and can lead to an inappropriate function of these devices. Recently, an implantable loop recorder (ILR) (REVEAL, Medtronic Inc.) has been introduced to evaluate the possible arrhythmic etiology of patients with recurrent syncope. We evaluated the interference of this device in two patients with implantable ILR and in three nonimplanted ILRs with four electromagnetic sources: cellular phones (GSMs), electronic article surveillance systems (EASs), metal detector gates (MDGs), and magnetic resonance imaging (MRI). The GSM did not affect appropriate function of the ILR whereas radiofrequency (RF) EAS could interfere with normal function in implanted and nonimplanted systems. The MDG had no influence on ILR function. The magnetic field induced by the MRI resulted in an irreversible error in one nonimplanted ILR. Therefore, although interference between electromagnetic sources and ILRs appears to be rare in our study, physicians should be aware of possible malfunctioning of these devices.
起搏器系统的电磁干扰已得到充分证实，并且可能导致这些设备功能异常。最近，一种植入式循环记录仪（ILR）（美敦力公司的REVEAL）已被用于评估反复晕厥患者可能的心律失常病因。我们使用四种电磁源，即手机（GSM）、电子商品防盗系统（EAS）、金属探测器门（MDG）和磁共振成像（MRI），对两名植入ILR的患者以及三个未植入的ILR进行了干扰评估。GSM未影响ILR的正常功能，而射频（RF）EAS可能会干扰植入和未植入系统的正常功能。MDG对ILR功能没有影响。MRI产生的磁场在一个未植入的ILR中导致了不可逆转的错误。因此，尽管在我们的研究中电磁源与ILR之间的干扰似乎很少见，但医生应意识到这些设备可能出现的故障。
