与心力衰竭中的QRS持续时间相比,左心室机械分散的预后影响与减少喷射分数的心力衰竭的预后影响
Fuyang Liu1, Rui Li1, Yujian Liu1
1Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Quantitative imaging in medicine and surgery
|August 11, 2025
概括
左心室机械分散 (LV-MD) 比QRS持续时间更好地预测心力衰竭的逆重塑与减少喷射率 (HFrEF). LV-MD为接受医学治疗的患者提供了额外的预后价值.
科学领域:
- 心脏病学 心脏病学
- 心脏成像 - - 心脏成像
- 心脏衰竭研究研究
背景情况:
- QRS持续时间表明电失调,并预测心力衰竭的左心室逆转重塑与减少喷射率 (HFrEF).
- 左心室机械分散 (LV-MD) 在HFrEF逆重塑的预后价值不太清楚.
- 目前对HFrEF的医学疗法旨在改善左心室功能和逆向重塑.
研究的目的:
- 确定LV-MD是否为左心室逆向重塑提供了与QRS持续时间相比的额外预测益处.
- 评估LV-MD作为在接受医学治疗的HFrEF患者中异步的成像指标.
- 为了比较LV-MD和QRS持续时间的预后值,用于反向重塑.
主要方法:
- 一项观察性队列研究包括234名住院的HFrEF患者.
- 斑点跟踪回声心脏图被用于从纵向应变计算LV-MD.
- 左心室逆转型的定义是随访时LVEF和LVEDDi的改善.
主要成果:
- LV-MD与QRS持续时间独立相关,但许多患有狭窄QRS的患者的LV-MD高.
- LV-MD是左心室逆向重塑的显著独立预测因子 (OR:0.97;P<0.001).
- 与QRS持续时间相比,LV-MD显示了相反重塑的优异预测性能 (AUC0.78对0.60;P<0.001).
结论:
- LV-MD提供了关于医疗治疗中HFrEF患者左心室异步的额外预后信息.
- 与单独的QRS持续时间相比,LV-MD对左心室逆向重塑具有更高的预测价值.
- 整合LV-MD评估可能会提高HFrEF中的风险分层和治疗指南.
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