Van Beek G J, den Dulk K, Lindemans F W, Wellens H J
Pacing Clin Electrophysiol. 1986 Sep;9(5):772-5. doi: 10.1111/j.1540-8159.1986.tb05427.x.
Insulation failure of pacemaker leads may give rise to functional defects such as under- or oversensing, loss of capture or muscle stimulation. An increased incidence of such failures has been reported for the bipolar polyurethane-insulated Medtronic model 6972 pacing lead. It is therefore important to identify techniques that will detect such insulation defects early. A case report is presented in which diminishing electrogram amplitude at follow-up predicted lead failure several months before becoming clinically manifest. This finding suggests that routine measurement of such an electrogram may be a useful tool in predicting impending lead malfunction.
起搏器导线绝缘故障可能会引发功能缺陷，如感知不足或过度、夺获丧失或肌肉刺激。据报道，双极聚氨酯绝缘的美敦力6972型起搏导线出现此类故障的发生率有所增加。因此，识别能够早期检测此类绝缘缺陷的技术非常重要。本文报告了一例病例，随访时电图幅度逐渐减小预示导线故障，且在临床表现出现前几个月就已出现。这一发现表明，常规测量此类电图可能是预测即将发生的导线故障的有用工具。
