超声心动图在定量评价急性心肌梗死患者短期内双房重构与形变中的应用

发布时间：2018-03-26 11:38

本文选题：斑点追踪显像　切入点：急性心肌梗死　出处：《临床心血管病杂志》2015年12期

【摘要】：目的:探讨超声心动图定量评价急性心肌梗死后患者双房的重构情况及形变能力。方法:选取我院确诊为急性心肌梗死患者(AMI组)61例及32例经心电、冠状动脉(冠脉)CT或造影检查排除冠心病的患者(对照组),心脏超声检查测得双房内径,最大、最小及收缩前容积(VFilaX、Vmin及Vp),计算双心房被动射血分数(LAPEF/RAPEF)及主动射血分数(LAAEF/RAAEF);留取动态图像进行二维斑点追踪脱机分析,获取双房备节段房壁左室收缩期的纵向峰值应变(LS)、应变率(SRs)、左室舒张早期峰值应变率(Sre)与左室舒张晚期峰值应变率(Sra)。并计算其平均峰值应变率(mSRs、mSRe、mSRa)。结果:与对照组比较,AMI组短期内双房重构无显著差异,双房主动射血分数显著增高(P0.05),双房被动射血分数显著减低(P0.05);mSRs、mSRe绝对值均减低(均P0.05),mSRa绝对值增高(P0.05)。结论:AMI早期双房均开始发生重构,但双房形变比容积变化更显著,二维斑点追踪应变成像能早期、敏感地定量评价AMI后双房功能的变化。
[Abstract]:Objective: to investigate the quantitative evaluation of biatrial remodeling and deformability in patients with acute myocardial infarction by echocardiography. Methods: 61 patients with AMI and 32 patients with AMI were selected from our hospital. Coronary artery (coronary artery CT or angiographic examination excluded coronary heart disease patients (control group, echocardiography measured the biatrial diameter, the largest, The minimum and pre-systolic volume of VFilaXT Vmin and VPU were calculated to calculate the biatrial passive ejection fraction (LAPEFR) and the active ejection fraction (LAAEFR / RAAEFF). Dynamic images were retained for two dimensional speckle tracing offline analysis. The longitudinal peak strain of left ventricular systolic phase (LSN), strain rate (SRS), left ventricular early diastolic peak strain rate (SreS) and left ventricular late diastolic peak strain rate (SRAA) were obtained. The mean peak strain rate of left ventricular peak strain rate was calculated. Results: the mean peak strain rate was calculated and compared with that of the control group. There was no significant difference in biatrial remodeling between AMI group and AMI group. The bilocular active ejection fraction (AEF) increased significantly (P 0.05), and the bilocular passive ejection fraction (P0.05) decreased significantly (P 0.05%). Conclusion the bilocular remodeling begins in the early stage of AMI, but the bilocular deformation is more significant than the volume change. Two-dimensional speckle tracing strain imaging can sensitively and quantitatively evaluate bilocular function after AMI.
【作者单位】：重庆医科大学附属第一医院心内科;
【分类号】：R540.45;R542.22

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