在严重的大动脉狭窄中TAVI后的左心室缩恢复:系统性审查和元分析
Elfatih A Hasabo1,2, Ammar Elgadi3, Alaa S Ahmed3
1Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin, Ireland.
概括
过导管大动脉植入 (TAVI) 显著改善左心室喷射率 (LVEF) 在近一半的严重大动脉狭窄和缩功能障碍的患者. 基线LVEF预测恢复,突出显示TAVI后心肌愈合的重要性.
科学领域:
- 心脏病学 心脏病学
- 干预心脏病学 干预心脏病学
- 心脏外科手术 心脏外科手术
背景情况:
- 严重的大动脉狭窄 (AS) 导致左心室 (LV) 压力过载,导致不利的重塑和缩功能障碍.
- 过导管大动脉植入 (TAVI) 可以逆转 LV 功能障碍,但恢复模式和预测因素需要进一步阐明.
- 了解TAVI后的LV功能恢复对于管理严重AS患者至关重要.
研究的目的:
- 评估严重AS患者TAVI后左心室喷射分数 (LVEF) 恢复的患病率和预测因素.
- 为了量化TAVI后LV缩恢复的程度.
- 确定影响TAVI后LVEF改善的因素.
主要方法:
- 根据PRISMA指南进行了全面的元分析.
- 在PubMed,Scopus,Web of Science和Cochrane数据库中搜索了在严重AS患者中报告TAVI后LVEF变化的研究.
- 使用随机效应模型汇集数据以确定LVEF改善 (≥10%绝对增加) 并通过元回归识别预测因素.
主要成果:
- 包括18项涉及4782名患者的研究.
- 49% (95% CI: 40-57%) 患者的LVEF减少 (3182名患者在14项研究中) 观察到LV系统恢复.
- 基线LVEF被确定为LV系统性恢复的显著预测指标 (p=0.018).
结论:
- 在大量患有先前缩功能障碍的患者中,TAVI与显著的LV缩恢复有关.
- 在高风险人群中,TAVI后心肌恢复具有预后意义.
- 这些发现可以指导临床决策和对TAVI结果的患者咨询.
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