Tandogan Izzet, Temizhan Ahmet, Yetkin Ertan, Guray Yesim, Ileri Mehmet, Duru Erdal, Sasmaz Ali
University of Cumhuriyet, Faculty of Medicine, Department of Cardiology, Sivas, Turkey.
Int J Cardiol. 2005 Aug 3;103(1):51-8. doi: 10.1016/j.ijcard.2004.08.031. Epub 2005 Jan 28.
The electromagnetic field generated by different systems have well-recognized adverse effects on pacemaker functions. The aim of this study is to evaluate the adverse effects of mobile phones on pacemaker functions.
A total of 679 patients with permanent pacemakers were enrolled in this study. The study was performed in two steps. Pacemaker lead polarity was unipolar in the first step and bipolar in the second step. Pacemaker sensitivity was first at nominal values, it was then reduced to the minimal value for that pacemaker and tested again. Two mobile phones were symmetrically located on both sides of the pacemaker pocket with the antennas being equidistant at 50, 30, 20 and 10 cm and in close contact with the pocket. The tests were performed when both mobiles were opened, on stand-by, were receiving a call, during the call and were closed. Thirty-seven patients with pacemakers were adversely affected (5.5%) (33 VVI-R pacemakers were converted to asynchronous mode, and 3 were inhibited, 1 DDD-R pacemaker developed ventricular triggering). When the lead polarity was unipolar, the rate of adverse effect was higher when compared to the bipolar state (4.12% and 1.40%, p<0.01). The increase in sensitivity was not an independent factor on the rate of being affected (p>0.05). The rate of observing an adverse effect increased as the pacemaker got older (p<0.05).
Mobile phones might have adverse effects on pacemaker functions under certain conditions. This does not result in any symptoms other than the inhibition of pacemakers, and pacemaker functions return to normal when the mobile phones are removed away from the patient.
不同系统产生的电磁场对起搏器功能具有公认的不良影响。本研究旨在评估手机对起搏器功能的不良影响。
本研究共纳入679例永久性起搏器患者。研究分两步进行。第一步起搏器导线极性为单极，第二步为双极。起搏器灵敏度首先设置为标称值，然后降至该起搏器的最小值并再次进行测试。两部手机对称放置在起搏器口袋两侧，天线距离口袋均为50、30、20和10厘米，并与口袋紧密接触。测试在两部手机开机、待机、来电、通话及关机时进行。37例起搏器患者受到不良影响（5.5%）（33例VVI-R起搏器转为非同步模式，3例受到抑制，1例DDD-R起搏器出现心室触发）。当导线极性为单极时，与双极状态相比，不良影响发生率更高（4.12%和1.40%，p<0.01）。灵敏度增加不是影响发生率的独立因素（p>0.05）。随着起搏器使用年限增加，观察到不良影响的发生率升高（p<0.05）。
手机在某些情况下可能对起搏器功能产生不良影响。除了起搏器抑制外不会导致任何症状，将手机从患者身边移开后起搏器功能恢复正常。
