在通过静脉输入心脏转换器-除器系统中,在失败的冲击后适当地感知心室动
J R Ellis1, D T Martin, F J Venditti
1Cardiac Electrophysiology Laboratory, Lahey Clinic Medical Center, Burlington, MA 01805.
Circulation
|October 1, 1994
概括
失败的除冲击不会损害通过静脉输血心脏转换器-除器 (TCD) 系统的腹腔动检测. 这项研究没有发现对再检测时间的显著影响,即使在冲击后降低R波振幅.
科学领域:
- 心脏病学 心脏病学
- 生物医学工程 生物医学工程
- 电子生理学 电子生理学
背景情况:
- 在集成的冲击/感觉透静脉心脏转换器-除器 (TCD) 引线系统中,对除冲击后的R波振幅减小存在担忧.
- 这种减少引发了人们对在冲击失败后传感能力是否足够的问题.
研究的目的:
- 在TCD系统中,在失败的除冲击后,研究心室动 (VF) 的再检测特征.
- 为了确定观察到的R波振幅减小后冲击的临床相关性.
主要方法:
- 研究了50名患有冲击/感觉TCD引领系统的患者,接受了转换测试.
- 测量初始检测时间 (IDT) 和再检测时间 (RDT) 对于142个失败的冲击事件后的VF.
- 在54次失败的冲击中,通过测量冲击前和后的R波幅来评估电图质量.
主要成果:
- 在植入或长达6个月的随访期间,IDT和RDT之间没有发现显著差异.
- 平均RDT为5.3±3.5秒,相比之下,IDT为4.5±3.3秒 (P = NS). 平均RDT为5.3±3.5秒,相比之下,IDT为4.5±3.3秒 (P = NS).
- 尽管冲击后R波幅显著下降 (8.1至6.8mV,P<.0001),但VF传感没有受到损害.
结论:
- 失败的除冲击在植入后6个月内不会显著影响这个TCD系统中的VF再检测.
- 在这种特定的TCD系统中,降低后冲击电图质量对于VF传感没有实际意义.
- 需要进一步评估,以确定这些发现是否适用于其他可植入心脏转换器-除器系统.
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