声学定量技术评价小儿左心功能(附69例报告)  

Acoustic Quantification: A New Approach to Assess Left Ventricular Function in Infants and Children

作　　者：王现[1] 林其珊[1] 陈伟达[1] 

机构地区：[1]上海医科大学附属儿科医院 [2]上海市第八人民医院小儿科

出　　处：《心肺血管病杂志》1999年第2期87-90,共4页Journal of Cardiovascular and Pulmonary Diseases

摘　　要：建立声学定量技术检测小儿左室功能的正常值，探讨声学定量技术检测正常小儿心功能的可信性。７１例正常小儿按年龄分组，应用声学定量技术测定左室乳头肌短轴切面的面积指标，心尖四腔心切面的容积指标、ＥＦ，建立声学定量技术测定小儿心功能的正常值。探讨声学定量技术与２Ｄ－ＥＣＨＯ测定左室功能的一致性。各年龄组声学定量技术测定的面积指标、容积指标、ＥＦ与２Ｄ－ＥＣＨＯ测得的相应值均相关，面积指标、ＥＦ与２Ｄ－ＥＣＨＯ的测定值存在偏性，但该偏性的９５％的可信区间表明，声学定量技术与２Ｄ－ＥＣＨＯ的测定值间存在较好的一致性；但声学定量技术测定的容积指标与２Ｄ－ＥＣＨＯ相应值偏性９５％可信区间宽，示声学定量技术与２Ｄ－ＥＣＨＯ在测定左室舒张末期容积、左室收缩末期容积的一致性较差。结论：声学定量技术可在机、实时、快速地检测小儿左室功能，并可代替２Ｄ－ＥＣＨＯ测定左室舒张末期面积、收缩末期面积、面积变化分数和ＥＦ，但测定的左室舒张末期容积。The purpose of this study was: 1) To set up the normal values of left ventricular function for acoustic quantification (AQ) technique in normal children, 2) To evaluate correlation between AQ and two-dimensional echocardiography.(2D-ECHO). Seventy- one normal subjects aged 1 month to 14 years old were divided into five age groups and underwent AQ as well as 2D-ECHO. Comparable image planes at the papillary level were analyzed. Measurements of left ventricular cavity area were compared at end-diastole and end-systole during cardiac cycle. Measurements of ventricular cavity volume and ejection fraction were obtained from LV apical-four chambers. 69 of 71 subjects (97%) had technically adequate conventional echocardiographies There were good correlations between values for left ventricular end-diastolic area, end-systolic area and fractional area change, left ventricular end-diastolic volume, end-systolic volume and ejection fraction. AQ underestimated end-diastolic area, end-systolic area, area change fraction and ejection fraction but the 95% differences were narrow. The acoustic quantification also under estimated end-diastolic volume, end-systolic volume, the 95% confidence interval were relatively wide. Conclusion: The acoustic quantification technique provides a new, clinical useful method for real-time estimation of the left ventricular area and ejection fraction. There were significant differences for cavity volume meament when compared with from 2D-ECHO

关 键 词：声学定量技术 二维超声心动图 左室功能 儿童 

分 类 号：R725.404.5[医药卫生—儿科]