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峰值应变分散和隔膜闪光对左心室肌动脉工作的影响,患者有完整的左束分支阻塞

Jie Xiao^1,2, Wanqing Hou^1,2, Shengnan Lin^1,2

¹Department of Ultrasound, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, China.

The international journal of cardiovascular imaging

|March 9, 2026

概括

隔膜闪光 (SF) 和增加的峰值应变分散 (PSD) 恶化左心室肌动脉的工作,并预测完全左束支部阻塞 (CLBBB) 患者的缩功能障碍.

科学领域:

心脏病学心脏病学
医疗成像医学成像
生理学生理学生理学

背景情况:

完整的左捆分支阻塞 (CLBBB) 导致左心室异步.
在CLBBB中评估心肌功能对于了解心缩功能障碍至关重要.
阴道闪光 (SF) 和峰值应变分散 (PSD) 是异步的标志物.

研究的目的:

为了研究SF和PSD对CLBBB患者左心室肌动脉工作的影响.
确定SF和PSD作为左心室缩功能障碍的预测因素.

主要方法:

使用2D斑点追踪成像 (2D-STI) 和压力-应变循环 (PSL) 分析.
招募了110名CLBBB患者 (69名有SF,41名没有) 和45名对照.
量化全球和区域心肌工作指数,包括全球浪费工作 (GWW) 和全球工作效率 (GWE).

主要成果:

患有SF的患者表现出显著更高的PSD,GWW和较低的GWE,全球建设性工作 (GCW) 和全球工作指数 (GWI).
SF和更高的PSD都与隔膜和自由壁中的心肌工作指数负相关.
SF和PSD被确定为左心室缩功能障碍的独立风险因素.

结论:

患有SF的CLBBB患者经历了较大的左心室缩性损伤和隔膜到自由壁的工作负荷不平衡.
作为一个有价值的全球异步参数,PSD补充了SF.
SF和PSD是CLBBB中心肌力学受损和缩功能障碍的关键指标.

关键词:

完整的左捆分支区块完成左捆分支区块心肌功能的工作.峰值变种分散的峰值变种分散.七道管的闪光灯,可以看到.系统性功能系统性功能

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