暗色乳头肌肉标志是扩张心肌病患者的新预后指标:一项多中心研究
Rongxue Shan1, Yan Gao2, Wenxian Wang3
1School of Medicine, Shandong First Medical University, Jinan, Shandong 271099, China; Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, China.
International journal of cardiology
|September 21, 2024
概括
通过心磁共振识别的左心室乳头肌肉异常,被称为Dark-Paps,是扩大心肌病患者主要心脏不良事件的重要预测因素. 这一发现提供了比传统临床模型更好的预后见解.
科学领域:
- 心脏病学 心脏病学
- 心血管成像 - 心血管成像
- 生物标志物 生物标志物
背景情况:
- 扩张性心肌病 (DCM) 是心力衰竭的重要原因之一.
- 在DCM中,左心室 (LV) 乳头肌异常的预后值仍然不清楚.
- 心脏磁共振 (CMR) 允许对心脏结构进行详细评估.
研究的目的:
- 评估在DCM患者中LV papillary肌肉异常的预后意义.
- 调查乳头肌肉特征与主要心脏不良事件 (MACE) 之间的关联.
- 为了确定CMR衍生的乳头肌肉特征是否改善DCM中的风险分层.
主要方法:
- 对369名接受CMR的DCM患者进行了回顾性分析.
- 评估LV乳皮肌的特征,包括厚度,附着度,信号强度.
- 确定末性信号低压为"暗拍".
- 使用卡普兰-梅尔和多变量模型对MACE和生存分析的随访.
主要成果:
- 有119名患者 (32.2%) 接受了Dark-Paps.
- 141名患者 (38.2%) 在22个月的中位随访期间经历了MACE.
- 黑色Paps与明显较低的无MACE存活率相关 (p < 0.001).
- 黑色Paps独立预测MACE (HR: 3.49; p < 0.001) 和改善预后模型歧视 (C-统计改善从0.652到0.777).
结论:
- 通过CMR识别的Dark-Paps是DCM中MACE的强有力的独立预测器.
- 黑暗的Paps提供了显著的额外的预后价值超出已建立的临床因素.
- 这一发现增强了DCM患者的风险分层.
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