在TAVR和MitraClip后,左心室壁应力与心脏重塑之间的关系
Stavroula Papapostolou1, John Shapland Kearns2, Benedict Costello3
1Alfred Health, Melbourne, Victoria, Australia.
Open heart
|September 1, 2025
概括
左心室壁应力 (LVWS) 预测了门干预后的恢复. 在MitraClip患者中,更高的腹筋 LVWS和通过导管的大动脉置换的患者中,更低的腹筋 LVWS与较差的结局相关.
科学领域:
- 心脏病学
- 心血管成像
- 干预心脏病学
背景情况:
- 左心室壁应力 (LVWS) 在结构干预后对心脏重塑的影响尚不清楚.
- 这项研究研究了LVWS和心脏重塑6个月后的跨导管大动脉置换 (TAVR) 和MitraClip (MC) 之间的关系.
研究的目的:
- 在TAVR和MC手术6个月后检查基线LVWS与心脏重塑之间的关联.
- 确定LVWS是否可以预测左心室 (LV) 恢复和干预后的功能结果.
主要方法:
- 在40名严重的大动脉狭窄 (AS) 和11名在TAVR或MC前后严重吐 (MR) 的患者中,使用侵入性血液动力学和心脏MRI计算了LVWS.
- 在手术前和6个月后评估了功能能力 (6分钟步行测试) 和心脏结构/ 功能 (心声扫描,CMR).
主要成果:
- TAVR和MC都改善了功能能力和心脏重塑, LV质量或体积减少之间没有显著差异.
- 随访时,MC队列的基线透气性LVWS (D-LVWS) 和TAVR队列的系统性LVWS (S-LVWS) 预测了较大的LV终端透气体积和较低的射出分数.
结论:
- 基线D-LVWS (MC) 和S-LVWS (TAVR) 的升高与介入后的LV重塑和功能差异有关.
- LVWS可以作为LV恢复的预测指标,潜在地指导干预时间以优化结果.
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