使用非侵入性压力-体积循环在左捆分支区域节奏中评估心脏能量
Naoya Inoue1,2, Shuji Morikawa1,2, Yuji Ito3
1Department of Cardiology, Chutoen General Medical Center, Kakegawa, Shizuoka, Japan.
Heart rhythm O2
|July 28, 2025
概括
与右心室节拍 (RVP) 相比,左捆分支区域节拍 (LBBAP) 提高了心室效率,并减少了心肌能耗. 这表明LBBAP在节奏相关的心脏能量方面具有优势.
科学领域:
- 心脏病学 心脏病学
- 心脏电生理学 心脏电生理学
- 生物医学工程 生物医学工程
背景情况:
- 由于临床益处,左捆支部区域节奏 (LBBAP) 越来越多地被青用于肌节律失调和心脏再同步治疗.
- 对于LBBAP与右心室节奏 (RVP) 对心脏能量的比较影响仍然不够理解.
研究的目的:
- 为了比较LBBAP和RVP对心脏能量学的影响.
- 为了进行这一比较,利用来自心磁共振 (CMR) 的新型非侵入性压力-体积 (PV) 循环算法.
主要方法:
- 包括2021年1月至2024年10月期间接受LBBAP或RVP永久心脏起器植入的患者.
- 使用CMR衍生的体积和时间变化的弹性模型计算了非侵入性光伏循环.
- 进行了敏感性分析,以确保调查结果的可靠性.
主要成果:
- 与RVP组相比,LBBAP组的末压力-体积关系明显高于RVP组 (P <.0001).
- 潜在能量和光伏面积在LBBAP (P = .0006和P = .006,分别) 显著较低.
- 在LBBAP组中,心室效率明显更高 (63.1%对57.4%;P = .006).
结论:
- 与RVP相比,LBBAP显示了心肌能耗的减少.
- LBBAP提高了心室效率,表明了与节奏相关的心脏能量方面的潜在优势.
相关概念视频
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