在严重的大动脉狭窄的情况下,在进行大动脉置换手术后,左心室逆向重塑的预后影响
Maria Rita Lima1, João Abecasis2,3, Rita Reis Santos2
1Cardiology Department, Hospital de Santa Cruz, Unidade Local de Saúde Lisboa Ocidental, Av. Prof. Dr. Reinaldo dos Santos, 2790 - 134, Carnaxide, Lisbon, Portugal. mlima@ulslo.min-saude.pt.
Scientific reports
|July 22, 2025
概括
在手术上更换大动脉之后,左心室逆向重塑是常见的,但并不总是预测结果. 只有左心室质量的回归独立地预测了手术后更好的临床结果.
科学领域:
- 心脏病学 心脏病学
- 心脏外科手术 心脏外科手术
- 心血管成像 - 心血管成像
背景情况:
- 手术性大动脉置换 (SAVR) 是严重的大动脉狭窄症 (AS) 的标准.
- 预计SAVR后的左心室 (LV) 反向重塑 (RR),但定义不一致,并不总是发生.
- 在SAVR之后的LV RR的预后影响需要澄清.
研究的目的:
- 通过使用多种成像标准来定义和评估SAVR后LVRR的患病率.
- 评估不同LV RR定义对SAVR后临床结果的预后价值.
- 确定在患有严重AS的患者中SAVR后临床结果的预测因素.
主要方法:
- 一个单一中心前性研究包括140名接受SAVR治疗严重症状AS的患者.
- 进行了手术前和后的胸前心电回声 (TTE) 和心磁共振 (CMR).
- 根据特定的标准定义了LV RR,包括LV体积,质量,几何,射出分数和全球纵向应变的变化.
主要成果:
- 87%的患者 (103/118) 满足了SAVR后LVRR的至少一个标准.
- 手术后的LV RR与主要终点 (全因死亡率,HF住院或HF恶化) 并没有独立相关.
- 只有LV质量回归被确定为有利临床结果的独立预测因子.
结论:
- 在严重的AS患者中,LV RR在SAVR后非常普遍.
- 目前的LV RR定义可能无法完全捕捉预后信息.
- 在SAVR后,LV结构改造,特别是质量回归,对于预测临床结果似乎比功能改善更为关键.
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