在患有大动脉狭窄症的患者中,通过导管更换大动脉门后,心房电气重塑和功能
Yujiro Homma1, Minoru Takahashi1, Koichi Fuse1
1Department of Cardiology, Tachikawa General Hospital, Nagaoka, Japan.
Heart and vessels
|October 15, 2023
概括
在严重的大动脉狭窄患者的透导管大动脉置换 (TAVR) 中,术后P波持续时间短暂增加. 然而,P波持续时间在6个月后显著逆转,表明心房逆向电气重塑.
科学领域:
- 心脏病学 心脏病学
- 心脏电生理学 心脏电生理学
- 干预心脏病学 干预心脏病学
背景情况:
- 严重的大动脉狭窄 (AS) 与心房电力改造有关,影响心脏功能.
- 穿过导管的大动脉置换 (TAVR) 是严重AS的主要治疗方法.
- 了解TAVR对心房的电生理学影响对于患者的治疗结果至关重要.
研究的目的:
- 在患有严重AS的患者中研究TAVR后的逆心房电力改造.
- 在TAVR后评估P波持续时间 (PWD) 和P终端力在V1 (PTFV1) 的变化.
- 为了将电生理学变化与心声回声学发现相关联.
主要方法:
- 对接受TAVR治疗的65名严重AS患者的前性分析.
- 在TAVR前和随访时对PWD和PTFV1的ECG测量.
- 心声造影仪用于评估心脏的尺寸和功能.
- 在TAVR后对心肌损伤的生物标志物分析.
主要成果:
- 塔弗成功地改善了大动脉膜面积,并减少了压力梯度,没有任何重大并发症.
- PWD和PTFV1在TAVR后立即出现过渡性增加,第二天恢复到基线.
- 在基线PWD≥130毫秒 (P=0.039) 的患者中,PWD在6个月内显著下降.
- 心声扫描显示出改善的射出分数,左心室厚度和左心房尺寸.
结论:
- 在最初的短暂增加后,TAVR导致心房电力改造的缓慢逆转,特别明显在PWD中.
- 在TAVR后观察到左心室和左心房的逆重塑.
- 这些发现表明TAVR可以对AS患者的心房电生理学和心脏结构产生积极影响.
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