左心房应变是无心脏起器节奏中心房心室同步的一个很好的预测因素
Federica Troisi1, Vincenzo P Caccavo1, Vincenzo E Santobuono2
1Cardiology Department, Regional General Hospital "F. Miulli", Bari, Italy.
Journal of cardiovascular electrophysiology
|November 27, 2023
概括
像Micra-AV这样的无心脏起器可以通过感知心房信号来实现心房心室同步. 左心房大小和功能的心声测量,特别是LA菌株,有助于预测最佳节奏的有效传感.
科学领域:
- 心脏病学 心脏病学
- 生物医学工程 生物医学工程
背景情况:
- 心房心室 (AV) 同步对于鼻节律患者的节奏至关重要.
- 无心脏起器为心脏节拍提供了一个不那么侵入性的选择.
- 确保与无设备的AV同步需要有效地感知心房活动.
研究的目的:
- 探索左心房 (LA) 大小和功能和A4振幅的回声心脏学测量之间的相关性.
- 使用Micra-AV无心脏起器识别成功AV同步的预测因素.
主要方法:
- 植入Micra-AV系统的患者接受了设备询问,以评估AV同步.
- 进行了心声检查,以评估LA形态和功能,包括多普勒参数和应变.
- 分析了与LA大小和应变参数相关的A4波幅.
主要成果:
- A4波幅显示与LA前后直径,LA体积,LA收缩应变和LA导管应变的反相关性.
- 观察到A4振幅和LA水库应变之间存在正相关性.
- 在LA储菌株 (LAsr),LA收缩菌株 (LAscd) 和LA导管菌株 (LAsct) 的绝对值较高的患者中发现了更高的A4值.
结论:
- 通过心声学评估的形态和功能LA参数与无心脏起器检测的A4信号有显著的关系.
- 拉拉菌株分析提供了超越形态参数的增量信息,用于评估心房功能.
- 植入前心声学评估,特别是LA菌株,可能有助于选择Micra-AV患者,以确保足够的A4传感和AV同步.
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