"双捕获" - - 一种技术,以区分狭窄复杂的上心动脉动症
Elizabeth Woollard1, Timothy Ryan2, David Yun2
1Fiona Stanley Hospital, Perth, Australia. elizabeth.louise.woollard@gmail.com.
概括
一种新的"双捕获"机动可靠地区分心房高心率与其他SVTs. 这种电生理学技术有助于诊断狭窄复杂的脑上高心率 (SVT) 机制.
科学领域:
- 电子生理学 电子生理学
- 心脏节律失常的研究研究.
- 诊断机动作 诊断机动作
背景情况:
- 在电生理学 (EP) 实验室中,区分心房动脉动 (AT),心房心室节点再入心动脉动 (AVNRT) 和狭窄复合性脑上心动脉动 (SVT) 中的正向回入心动脉动 (ORT) 是至关重要的.
- 由于单个测试的可靠性有限,当前的诊断操作往往需要组合.
研究的目的:
- 为了评估单个His-synchronous同时在心房和心室的额外刺激的有效性,称为"双捕获",可靠地区分狭窄复杂的SVT机制.
主要方法:
- 对44名接受狭窄复杂SVT电生理学研究的患者进行了回顾性分析.
- "双捕获"操作涉及到同时向心房 (A) 和心室 (V) 提供额外的刺激,当His是耐火的.
- 分析了心内记录,以评估操纵后最早的信号,以区分心律失常机制.
主要成果:
- 在38名符合条件的患者中,有29名患者 (76%) 成功完成了"双捕获"操作,患者接受了AVNRT或ORT.
- 在"双捕获"后,心动节拍的可重复终止与ORT (7名患者) 有关.
- 作为持续高心率的第一个后刺激信号,His信号通常表示AVNRT (20名患者),ORT的两个例外.
结论:
- "双捕获"机动证明了在持续狭窄复杂SVT中确认AVNRT的特异性为78%,ORT的特异性为100%.
- 这种技术在证实旁观者通路或评估SVT诊断中隔膜通路时可能特别有用.
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