超性心肌病中逆隔膜曲率:对功能,结构和心律失常风险的影响
Roberto Polizzi1, Grazia Canciello1, Leopoldo Ordine1
1Department of Advanced Biomedical Sciences, University Federico II, Naples, Italy.
International journal of cardiology
|November 10, 2025
概括
在高性心肌病 (HCM) 患者的逆隔膜曲 (RSC) 与一个独特的表型有关. 这包括顶动脉瘤,中腔抹除,以及一个更糟糕的不律律形状,独立于LV动脉瘤.
科学领域:
- 心脏病学 心脏病学
- 医疗成像医学成像
- 生物医学工程 生物医学工程
背景情况:
- 反向隔膜曲 (RSC) 是一个公认的临床负担增加的临床标志物,在多变性心肌病 (HCM).
- 在HCM患者中,RSC的精确机械和结构含义尚未完全理解.
研究的目的:
- 研究HCM患者RSC的机械和结构影响.
- 确定RSC是否与特定的心脏结构变化和功能障碍有关.
主要方法:
- 107名HCM患者接受了二维回声心脏图,三维回声心脏图和心脏磁共振 (CMR).
- RSC被定义为向LV腔的左心室 (LV) 中部septal凸度.
- 评估了LV的缩行为,包括腔和中腔消灭.
主要成果:
- 49%的患者患有RSC,仅与LV形动脉瘤 (20%) 相关.
- RSC患者的瘤突变率较高,非持续性心室动脉冲动 (NSVT),壁厚较大,全球纵向应变 (GLS) 损伤较大,晚期加多增强更频繁.
- RSC是NSVT的独立预测因素,在所有减少顶端喷射分数的RSC患者中观察到中腔消灭.
结论:
- RSC识别了一个独特的HCM表型,而不仅仅是一个解剖学变体.
- 这种表型的特点是顶动脉瘤,中腔除,顶功能受损,心律不整的形状更差.
- 这些发现独立于LV动脉瘤的存在.
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