Rubin S A, Nalos P C, Solingen S, Whiting J, Gang E
Division of Cardiology, Cedars-Sinai Medical Center, Los Angeles, CA 90048.
Pacing Clin Electrophysiol. 1988 May;11(5):645-9. doi: 10.1111/j.1540-8159.1988.tb04560.x.
This report describes the inadvertent induction of non-sustained atrial and ventricular arrhythmias due to the malfunction of a programmable cardiac stimulator. The malfunction occurred when line power resumed after a brief municipal power outage ("blackout") during an invasive electrophysiological study. The stimulator spontaneously delivered very high frequency pulses through the electrode catheter to the myocardium which resulted in atrial and ventricular arrhythmias. During bench testing, the stimulator delivered a continuous train of high frequency output pulses (greater than or equal to 1 mA) when line voltage resumed normal level after it had dropped below 65 VAC. Electrical safety during electrophysiological testing requires a stimulator design which is immune to altered operating conditions, and which shuts down if abnormal operating or output conditions are detected.
本报告描述了由于可编程心脏刺激器故障而意外诱发的非持续性房性和室性心律失常。该故障发生在侵入性电生理研究期间短暂的市政停电（“断电”）后恢复市电供电时。刺激器通过电极导管自发地向心肌传递非常高频率的脉冲，从而导致房性和室性心律失常。在实验台上测试时，当线路电压降至65 VAC以下后恢复到正常水平时，刺激器发出一连串连续的高频输出脉冲（大于或等于1 mA）。电生理测试期间的电气安全要求刺激器设计不受运行条件变化的影响，并且在检测到异常运行或输出条件时会关闭。
