纵向应变评估主动脉瓣狭窄置换术后心肌功能

Longitudinal strain in assessing myocardial mechanics in patients with severe aortic stenosis undergoing aortic valve replacement

利用斑点追踪技术得出的纵向应变(LS)可发现射血分数下降前心肌收缩功能微小变化,在预测主动脉瓣狭窄(AS)患者主动脉瓣置换术(AVR)后死亡率及症状发展方面具有重要应用价值。本文针对应用LS评估AS患者AVR后心肌功能现状进行综述。

Longitudinal strain(LS)acquired by speckle tracking echocardiography can detect subtle changes of myocardial systolic function prior to left ventricular ejection fraction,which is clinically useful in predicting mortality and symptom development in patients with aortic stenosis(AS)after aortic valve replacement(AVR).The status of LS in assessing myocardial mechanics in severe AS patients undergoing AVR were reviewed in this article.