| 李阳,马春燕,刘爽,王永槐,邹麓,杨军.二维斑点追踪成像技术评价左心室不同部位心肌梗死患者右心室心肌功能[J].中国医学影像技术,2016,32(7):1047~1051 |
| 二维斑点追踪成像技术评价左心室不同部位心肌梗死患者右心室心肌功能 |
| Two-dimensional speckle tracking imaging in evaluation of right ventricular myocardial function in patients with different region myocardial infarction in left ventricle |
| 投稿时间：2015-10-12 修订日期：2016-05-09 |
| DOI：10.13929/j.1003-3289.2016.07.015 |
| 中文关键词: 急性心肌梗死 心肌功能 超声心动描记术 二维斑点追踪成像 |
| 英文关键词:Acute myocardial infarction Myocardial function Echocardiography Two-dimensional speckle tracking imaging |
| 基金项目:沈阳市科学计划项目（F13-221-9-60） |
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| 中文摘要: |
| 目的 探讨二维斑点追踪成像技术（STI）评价左心室不同部位心肌梗死对右心室心肌功能的影响。方法 收集诊断为急性心肌梗死（AMI）并接受经皮冠状动脉支架植入术的52例患者（AMI组），结合心电图、室壁运动评分指数（WMSI）及冠状动脉造影结果，分为下后壁心肌梗死亚组（A组，n=26）和非下后壁心肌梗死亚组（B组，n=26）。另选取26名健康志愿者作为对照组。对3组行超声心动图检查，采用STI技术进行评价，比较左、右心室心肌功能。结果 与对照组比较，B组右心室纵向峰值应变（RV-LS）、右心室面积变化率（RVFAC）、左心室纵向峰值应变（LV-LS）、室间隔纵向峰值应变（Sep-LS）、左心室射血分数（LVEF）减小（P均<0.05），WMSI增大（P<0.05）；与A组比较，B组RV-LS、RVFAC、LV-LS、Sep-LS减小（P均<0.05），二尖瓣舒张早期血流速度与二尖瓣瓣环舒张早期运动速度的比值增大（P<0.05）。RV-LS与LV-LS、Sep-LS和LVEF均呈正相关（r=0.48、0.55、0.39，P均<0.05）。结论 非下后壁心肌梗死患者右心室心肌收缩功能减低，且右心室心肌收缩功能主要受室间隔心肌收缩功能的影响。 |
| 英文摘要: |
| Objective To evaluate the right ventricular myocardium function in patients with myocardial infarction of different region in left ventricle using two-dimensional speckle tracking imaging (STI). Methods Totally fifty-two acute myocardial infarction (AMI) patients who were treated successfully with coronary artery stent implantation (CASI) were involved. They were divided into inferior/posterior AMI group (group A, n=26), non-inferior/posterior AMI group (group B, n=26), according to the results of ECG, ventricular wall motion score index (WMSI) and CAG. Twenty-six healthy subjects were selected as control group. They all underwent echocardiography examination. STI was adopted to evaluate myocardial function of left and right ventricular. Results Compared to control group, right ventricular systolic longitudinal strain (RV-LS), right ventricle fractional area change (RVFAC), left ventricular systolic longitudinal strain (LV-LS), septal systolic longitudinal strain (Sep-LS) and left ventricular ejection fraction (LVEF) in group B all decreased (all P<0.05), and ventricular wall motion score index (WMSI) increased (P<0.05). Compared to group A, RV-LS, RVFAC, LV-LS and Sep-LS in group B decreased (all P<0.05), and the ratio of mitral early diastolic velocity and mitral annulus velocity increased (P<0.05). RV-LS was positively related with LV-LS, Sep-LS and LVEF (r=0.48, 0.55, 0.39, all P<0.05). Conclusion The right ventricular myocardium systolic function decrease in patients without inferior/posterior myocardial infarction, and the systolic function of right ventricle myocardium is significantly affected by the septal myocardium contraction. |
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