穿透导管大动脉置换后的动脉硬度
Refik Kavsur1, Christian Schaefer1, Max Jonathan Stumpf1
1Heart Center Bonn, Department of Medicine II, University Hospital Bonn, Bonn, Germany.
Angiology
|August 12, 2023
概括
过导管大动脉置换 (TAVR) 改善了常见的动脉应变,并减少了严重大动脉缩患者的动脉硬性. 这些改善在患有更严重狭窄症的患者中更为显著.
科学领域:
- 心血管医学 心血管医学
- 医疗成像医学成像
- 血管生物学 血管生物学
背景情况:
- 严重的大动脉狭窄症 (AS) 显著影响心血管健康.
- 动脉硬是已知的AS并发症,影响大动脉,如常见的动脉.
- 过导管大动脉置换 (TAVR) 是严重AS的治疗选择,但它对动脉机制的影响需要进一步调查.
研究的目的:
- 在患有严重AS的患者中,分析TAVR后常见动脉 (CCA) 菌株特性的变化.
- 评估TAVR对动脉合规性和CCA硬度的影响.
- 为了研究大动脉膜面积和CCA应变变化后TAVR之间的关系.
主要方法:
- 在59名患者的TAVR前后使用超声波斑跟踪来评估CCA菌株参数.
- 患者根据大动脉膜面积分层 (<0.75厘米2对比≥0.75厘米2).
- 对比了手术前后的应变量,包括辐射和周围应变以及应变率.
主要成果:
- TAVR显著改善了CCA的辐射速度,辐射位移,周围应变,辐射应变速率和周围应变速率 (P < .05对所有).
- 在TAVR后 (P = .082) 观察到辐射应变增加的趋势.
- 在TAVR后,人们注意到动脉壁刚度降低,在患有更严重的AS (较小的大动脉膜区域) 的患者中观察到更大的改善.
结论:
- TAVR有效地改善了CCA的机械性能,表明动脉硬性减少.
- 在患有更严重的大动脉狭窄症的患者中,TAVR对动脉机制的有益影响更加明显.
- 超声波斑跟踪是TAVR后评估血管变化的宝贵工具.
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