Duru F, Lauber P, Klaus G, Candinas R
Division of Cardiology, University Hospital of Zurich, Switzerland.
Pacing Clin Electrophysiol. 1998 Nov;21(11 Pt 2):2353-9. doi: 10.1111/j.1540-8159.1998.tb01181.x.
Electromagnetic interference (EMI) is a well-known cause of pacemaker dysfunction. The communication between pacemakers and programmers, enabled by telemetry, is also susceptible to EMI. We have observed that hospital pager systems have the potential to interfere with pacemaker telemetry. Measurements in our pacemaker clinic and in a technical laboratory have shown that inductive pager systems may disturb telemetry in the form of inaccurate battery voltage, current and impedance measurements, disturbances in intracardiac electrogram tracings, or total interruption of telemetric communications. The reason for EMI was an overlap of carrier frequencies of some pacemaker programmers (32-37 kHz) with those of our inductive pager system (36.11 kHz). Radiofrequency pager systems using higher frequencies (in MHZ range) are unlikely to cause such interference. Awareness of this interference potential may have practical implications in choosing the carrier frequencies of inductive hospital pager systems, as well as pacemaker programmers, and in planning the location of pacemaker clinics.
电磁干扰（EMI）是起搏器功能障碍的一个众所周知的原因。通过遥测实现的起搏器与程控仪之间的通信也容易受到电磁干扰。我们观察到医院传呼系统有可能干扰起搏器遥测。我们在起搏器诊所和一个技术实验室所做的测量表明，感应式传呼系统可能会以不准确的电池电压、电流和阻抗测量、心内电图描记干扰或遥测通信完全中断的形式干扰遥测。电磁干扰的原因是一些起搏器程控仪的载波频率（32 - 37千赫）与我们的感应式传呼系统的载波频率（36.11千赫）重叠。使用更高频率（兆赫范围）的射频传呼系统不太可能造成这种干扰。了解这种干扰可能性可能对选择感应式医院传呼系统以及起搏器程控仪的载波频率，以及规划起搏器诊所的位置具有实际意义。
