三尖瓣环位移评价右室收缩功能的价值探讨  

Evaluation of right ventricular systolic function by tricuspid annular displacement

作　　者：李锦丽[1] 石伟元[1] 邓斌华[1] 

机构地区：[1]郴州市第一人民医院超声科,湖南省郴州423000

出　　处：《中国医师杂志》2011年第2期191-193,共3页Journal of Chinese Physician

摘　　要：目的 探讨二维斑点追踪技术测定的三尖瓣环位移（TAD）评价右心室收缩功能的价值.方法 选择85例观察对象,其中RVEF＞50%的健康对照组40例,RVEF＜50%的右室收缩功能降低组45例.应用二维斑点追踪技术测定心尖四腔观三尖瓣环中点处（TADmid）的位移,实时三维超声心动图方法 获取右室射血分数（RVEF）,并分析TADmid与RVEF的相关性.结果 右室收缩功能降低组TADmid[（8.01±3.93）mm]较健康对照组[（13.75±3.26）mm]显著减低,差异有统计学意义（t=7.28,P＜0.01）.TADmid与RVEF呈正相关（r=0.76,P＜0.01）,TADmid评价RVEF＞50%的截断点为9.7,敏感性为72%,特异性为86%.结论 二维斑点技术测定的TAD与RVEF相关性良好,且操作简便易行,有望成为临床评价右室收缩功能的新指标.Objective To explore the value of tricuspid annular displacement （TAD） in evaluating right ventricular systolic function by speckle tracking imaging.Methods Forty healthy people （RVEF 〉50%） and forty five patients（RVEF 〈50%）were enrolled in this study.The apical four-chamber view was obtained and tricuspid annular midpoint displacement （TADmid） were measured by speckle tracking imaging.Right ventricular ejection fraction （RVEF） was measured by three-dimensional echocardiography.The correlation of tricuspid annular midpoint displacement （TADmid） and right ventricular ejection fraction （RVEF） was analyzed.Results These was statistical significance of tricuspid annular midpoint displacement between healthy people （RVEF 〉 50%） and patients （RVEF 〈 50%） （t = 7.28,P 〈 0.01）.There was positive correlation between TADmid and RVEF （P 〈 0.01）.The correlation coefficient between TADmid and RVEF was 0.76 （P 〈 0.0l）.The cut-off value of TADmid for RVEF 〉 50% was 9.7 with a sensitivity of 72% and a specificity of 86%.Conclusions TAD by speckle tracking imaging showed an excellent correlation with RVEF.Tricuspid annular displacement by speckle tracking imaging was a simple and easy method,and it might be a new index in assessing right ventricular systolic function in clinical practice.

关 键 词：三尖瓣 超声心动描记术 多普勒 彩色 心室功能 右 心肌收缩 

分 类 号：R445.1[医药卫生—影像医学与核医学]