摘要: |
目的 应用二尖瓣环位移自动追踪技术(TMAD)与二维斑点追踪技术(2D-STE)评价阵发性房颤的左房收缩功能,比较两者的差异。方法 选取30例阵发性房颤(PAF)患者与30例正常对照组均进行常规超声检查;应用TMAD,获取时间-位移曲线,测量左室收缩期二尖瓣环位移(TMAD-D),左房收缩期位移(TMAD-S);应用2D-STE,获得左房时间-应变率曲线,测量左室收缩期、舒张早期、舒张晚期的左房平均峰值应变率(mSRs、mSRe、mSRa);比较TMAD与2D-STE参数。结果1.与对照组相比,PAF组mSRs、mSRe、mSRa、TMAD-D、TMAD-S减小(均P<0.05);2、TMAD-D及mSRs的ROC曲线下面积分别为0.867,0.944;TMAD-S及mSRa的ROC曲线下面积分别为0.808,0.850;3、TMAD 较2D-STE测量时间明显缩短(P<0.05);4、重复性检验:TMAD-D与TMAD-S均值的观察者内的组内相关系数分别为0.964与0.888,观察者间的组内相关系数分别0.918与0.860。结论 TMAD与2D-STE均可评估阵发性房颤左房收缩功能,但TMAD更加方便可行。 |
关键词: 阵发性房颤 左房 二尖瓣环位移自动追踪技术 二维斑点追踪 |
DOI: |
投稿时间:2020-07-01修订日期:2020-08-09 |
基金项目: |
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A comparative study of left atrial?systolic function in patients with paroxysmal atrial fibrillation evaluated by TMAD and 2D-STE |
maxiuling,guotai,lufang |
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Abstract: |
Objective To evaluate left atrial?systolic function in paroxysmal atrial fibrillation (PAF) by tracking of mitral annular displacement technology (TMAD)and two-dimensional speckle tracking echocardiongraphy(2D-STE),the differences of the two methods were compared. Methods 30 patients with paroxysmal atrial fibrillation (PAF) and 30 normal controls were selected for conventional ultrasound measurement ;TMAD was applied to obtain the time-displacement curve to obtain the left ventricular systolic mitral annular displacement (TMAD-D) and left atrial systolic displacement (TMAD-S);2D-STE was applied to obtain the left atrial time-strain rate curve,the mean value of the peak strain rate of left ventricular systolic,early and late diastolic of left atrium(mSRs, mSRe, mSRa)were recorded,comparing TMAD and 2D-STE parameters.Results 1.Compared with the control group, the LAD of PAF group was increased, while mSRs, mSRe, mSRa, TMAD-D and TMAD-S were decreased (all P<0.05);2.The area under ROC curves of TMAD-D and mSRs is 0.867 and 0.944 respectively,The area under ROC curves of TMAD-S and mSRa is 0.808 and 0.850 respectively.3.TMAD is significantly shorter than 2D-STE (P<0.05).4.Repeatability test: the intra-observer correlation coefficients of TMAD-D and TMAD-S mean were 0.964 and 0.888, and the inter-observer correlation coefficients were 0.918 and 0.860, respectively. Conclusion Both TMAD and 2D-STE can detect the changes of left atrial systolic function in paroxysmal atrial fibrillation.However, TMAD is more convenient and feasible. |
Key words: Paroxysmal atrial fibrillation Left atrial tracking of mitral annular displacement technology two-dimensional speckle tracking |