在用高跨通道门替换过导管大动脉门后,亚临床延迟冠状动脉骨性阻塞
Paula Ackermann1, Mateo Marin-Cuartas1, A Luise Bayer2
1University Department of Cardiac Surgery, Heart Center Leipzig, Leipzig, Germany.
JACC. Case reports
|July 18, 2025
概括
延迟冠状动脉阻塞可能发生在跨导管大动脉置换 (TAVR) 后. 在ACURATE新门周围的内皮细胞生长导致了这种罕见的并发症,强调了仔细选择假肢.
科学领域:
- 心脏病学 心脏病学
- 心血管外科心血管外科
- 生物医学工程 生物医学工程
背景情况:
- 过导管大动脉置换 (TAVR) 是对大动脉狭窄的常见手术.
- 准确的新设备是一个广泛使用的透气管心脏门 (THV).
- THV植入的长期并发症需要持续调查.
研究的目的:
- 描述两个在ACURATE新型透管心脏 (THV) 植入后延迟的亚临床冠状动脉骨阻塞的病例.
- 要突出内皮细胞过度生长作为这种罕见并发症的原因的作用.
- 强调假肢选择和植入技术在预防不良事件中的重要性.
主要方法:
- 两名女性患者 (74岁和83岁) 呈现急性心力衰竭的病例报告.
- THV 探索和手术性大动脉门置换.
- 组织病理学检查和观察在探索期间,以确定阻塞的原因.
主要成果:
- 这两位患者都经历了急性心力衰竭,原因是之前植入的ACURATE新THVs的严重膜功能障碍.
- 在扩张过程中,在THV假肢的上部冠状周围观察到大量的环状内皮细胞生长.
- 这种内皮增殖导致了瓦尔萨尔瓦鼻的隔离,导致亚临床延迟冠状动脉骨性阻塞.
结论:
- 导致晚期冠状动脉骨性阻塞的内皮细胞过度生长是一种罕见但严重的并发症,与ACURATE新THV相关.
- 仔细选择THV假肢和细致的植入技术至关重要,特别是在具有特定解剖特征的患者 (小的大动脉根,Valsalva狭窄的鼻腔,低冠状动脉骨).
- 这些发现强调了对TAVR程序进行终身监测和考虑解剖学因素的必要性.
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