超声心动图对心肌梗死患者后期左室重塑预测价值的初步探讨

Echocardiography derived variables predicting left ventricular remodeling after acute myocardial infarction

  • 摘要: 目的: 初步探讨急性心肌梗死(AMI)急性期超声心动图各指标对AMI后期左室重塑的预测价值。方法: 我们对5 2例首次AMI的患者于急性期(5 1± 1 9) d及随诊期(10 6± 3 4)月分别行超声心动图检查,测量并对比前后超声检查各指标的变化。结果: 随诊期左室舒末径(LVD)、左室舒张末容积指数(EDVI)、每搏量指数(SVI)及二尖瓣减速时间(DT)均较急性期增大(P<0.05),5 2例患者中37例(71%)发生左室重塑,Stepwise回归分析显示: 急性期中SVI、DT对左室舒张末容积指数的变化(ΔEDVI)有很强的预测价值。SVI及DT均与ΔEDVI呈明显的负相关,回归方程为ΔEDVI=49 5 5-0 95SVI-0 13DT,其确定系数R2=0.5 0(P<0.01)。结论: AMI急性期SVI、DT的测定对AMI患者后期的左室重塑有一定的预测价值。

     

    Abstract: Objective: This study was to investigate the value of Echocardiographic measurements in predicting Left Ventricular Remodeling (LVRM) after Acute Myocardial Infarction (AMI). Methods: 52 patients with first AMI underwent echo examinations at day 5 1±1 9 and 10 6±3 4 months after AMI. Results: During the follow up, left ventricular end diastolic diameter (LVD), left ventricular end diastolic volume index(EDVI),systolic volume index (SVI) and Doppler derived mitral deceleration time (DT) increased significantly (P<0. 05) There were 37 LVRM in 52 AMI patients In a stepwise regression model,both SVI,DT emerged as the independent predictor of LVRM A significant inverse correlation was found between SVI and changes in EDVI (ΔEDVI),the same to DT The regression equation was ΔEDVI=49 55-0 95SVI-0 13DT, R2=0 50(P<0. 01). Conclusion: Among the echocardiography variances, SVI and DT provide independent predictors of LVRM for patients with AMI.

     

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