Ng Kevin Kit, Gould Paul A
Princess Alexandra Hospital, Department of Cardiology, Queensland, Australia.
Princess Alexandra Hospital, Department of Cardiology, University of Queensland, Department of Medicine, Brisbane, Australia.
Indian Pacing Electrophysiol J. 2015 Oct 19;15(4):216-9. doi: 10.1016/j.ipej.2015.10.008. eCollection 2015 Jul-Aug.
The DF-4 is a new defibrillator lead technology. We present two cases of non-physiological transient ventricular over-sensing in patients who underwent implantation of an ICD for secondary prevention. Case 1 had ventricular over-sensing during pacing threshold evaluation post defibrillation testing while Case 2 had the lead integrity alert triggered immediately post discharge with transient over-sensing. No lead-connector issues were found. Case 1 was likely due to improper venting of the header and trapped air. Case 2 was hypothesized to be due to intermittent header pin non-contact secondary to blood in the header. These cases reveal that DF-4 leads are subject to both reported and potentially novel causes of transient acute ventricular over-sensing.
DF-4是一种新型除颤器导线技术。我们报告两例接受植入式心律转复除颤器（ICD）二级预防的患者出现非生理性短暂心室过度感知的病例。病例1在除颤测试后的起搏阈值评估期间出现心室过度感知，而病例2在出院后立即触发导线完整性警报并伴有短暂过度感知。未发现导线连接器问题。病例1可能是由于接头排气不当和空气滞留所致。病例2据推测是由于接头中有血液导致接头引脚间歇性非接触所致。这些病例表明，DF-4导线会出现已报道的以及潜在的新型短暂急性心室过度感知原因。
