Andersen C, Arnsbo P, Meyer J S
Klinisk fysiologisk nuklearmedicinsk afdeling, Odense Sygehus.
Ugeskr Laeger. 1991 Sep 2;153(36):2480-2.
Employment of alternative therapeutic measures is increasing in Denmark. Some of this equipment employs magnetic fields in the therapeutic strategy. This may involve interference with the function of electronic equipment. Electronic interference may, in certain situations, influence pace-maker function. In the worst cases, it may be imagined that the situation may endanger life for persons who are dependent on pace-makers. When a pace-maker is exposed to a magnetic field of a certain strength, the type of pacing is changed to a fixed frequency. Some pace-maker types carry out a built-in test programme when exposed to magnetic influence (vario- or threshold test). The magnetic influence may involve discomfort for the wearer of the pace-maker, but does not endanger life. Investigation of stationary magnetic fields from alternative medical equipment resulted in disturbance of pace-maker function in an isolated case. Pulsating magnetic fields may result in possible induction of electric current which may be wrongly interpreted by the pacemaker. The results of this may be that the pace-maker does not send out pace impulses. As protection from continuous electric noise, pace-makers have a built-in electronic safety circuit (dual-demand). When this is activated, the pace-maker will stimulate with a basic frequency. It is recommended that equipment which employs magnetic fields in treatment should be measured before being employed on pace-maker wearers.
在丹麦，替代治疗措施的使用正在增加。这类设备中的一些在治疗策略中运用了磁场。这可能会干扰电子设备的功能。在某些情况下，电子干扰可能会影响起搏器的功能。在最糟糕的情况下，可以想象这种情况可能会危及依赖起搏器的人的生命。当起搏器暴露于一定强度的磁场中时，起搏类型会变为固定频率。一些类型的起搏器在受到磁影响时会执行内置测试程序（可变或阈值测试）。磁影响可能会给起搏器佩戴者带来不适，但不会危及生命。对替代医疗设备的静磁场进行调查时，在一个孤立案例中出现了起搏器功能紊乱的情况。脉动磁场可能会导致感应电流，而起搏器可能会对其产生错误解读。其结果可能是起搏器不发出起搏脉冲。作为对持续电噪声的防护，起搏器有一个内置的电子安全电路（双需求）。当该电路被激活时，起搏器将以基本频率进行刺激。建议在将使用磁场进行治疗的设备用于起搏器佩戴者之前对其进行测量。
