DETERMINATION OF LEFT-VENTRICULAR VOLUME IN CHILDREN - ECHOCARDIOGRAPHIC AND ANGIOGRAPHIC COMPARISONS
DETERMINATION OF LEFT-VENTRICULAR VOLUME IN CHILDREN - ECHOCARDIOGRAPHIC AND ANGIOGRAPHIC COMPARISONS
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DOI：
10.1161/01.cir.62.3.548
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发表时间：
1980-01-01
期刊：
影响因子：
37.8
通讯作者：
HEILBRON, DC
中科院分区：
文献类型：
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作者：
SILVERMAN, NH;PORTS, TA;HEILBRON, DC
对20名年龄在2个月到18岁之间的儿童进行了M型和二维超声心动图以及血管造影电影检查，计算了左室容积和射血分数。用立方法和校正立方法计算M型记录的体积。使用心尖长轴和心尖四腔视图从二维超声心动图测量心室容积。用光笔从电视图像中描出内皮细胞轮廓，并通过微型计算机进行分析。采用单平面面积-长度法计算左心室各切面的舒张末期容积、收缩末期容积、每搏输出量和射血分数。用双平面面积长度法和Simpson法则法计算左心室容积和射血分数。通过超声心动图确定的容积和射血分数与超声心动图研究后24小时记录的双平面电影血管造影确定的容积和射血分数进行比较。一般而言，二维技术的相关系数优于M模式技术。二维超声心动图是一个很好的预测血管造影舒张末期容积，但略高估血管造影收缩末期容积。对于射血分数，二维超声心动图技术与血管造影的相关性最好，尤其是双平面面积长度法（r= 0.82）和心尖长轴单平面面积长度法（r= 0.77）。二维超声心动图比M型超声心动图更准确地预测儿科患者的血管造影左心室容积和功能。）左心室容积测定对评价先天性心脏病患儿的左心室功能、心内和心外分流、左室肥厚转位患者的肺血流量是有用的。评价左心室容积的标准方法是一种有创技术，它使用从血管造影电影中描绘出的心室轮廓。目前还没有一种准确、无创的技术来测定儿童的左心室容积和射血分数。[10]通过M型超声心动图测量心室容积和射血分数可能会受到节段性功能障碍或反常间隔运动的影响。在成人研究中，”16二维超声心动图比M型超声心动图更准确地估计静脉曲张，
Left ventricular volumes and ejection fraction were calculated from the M-mode and twodimensional echocardiograms and cineangiograms in 20 children, ages 2 months to 18 years. The cube and cor-rected cube methods were used to calculate volumes from the M-mode recordings. Ventricular volumes were measured from two-dimensional echocardiograms using the apical long-axis and apical four-chamber views. Endocardial outlines were traced from the televised images with a light pen and analyzed by a microcomputer. With a single-plane area-length method, the end-diastolic volume, end-systolic volume, stroke volume and ejec-tion fraction were calculated for each left ventricular view. The ventricularvolumes and ejection fraction were computed by biplane area-length and Simpson's rule methods from the combined recorded outlines of the two left ventricular views. The volumes and ejection fraction determined by echocardiography were compared with those determined from biplane cineangiograms recorded 24 hours after the echocardiographic studies. In general, the correlation coefficients were better for the two-dimensional than the M-mode technique. Two-dimensional echocardiography was a good predictor of the angiographic end-diastolic volume but overesti-mated slightly the angiographic end-systolic volume. For ejection fraction, the best correlation with angiography was achieved by the two-dimensional echocardiographic techniques, especially the biplane area-length method (r= 0.82) and the apical, long-axis, single-plane area-length method (r= 0.77). Two-dimensional echocardiography is more accurate than M-mode echocardiography for predicting angiographic left ventricular volume and function in pediatric patients.)LEFT VENTRICULARvolume determination is useful in children with congenital heart disease for evaluating left ventricular function, intracardiac and extracardiac shunts,'-7 and pulmonary blood flow in patients with aortopulmonary transposition. 8 The standard method for evaluating left ventricular volume is an invasive technique that uses ventricular outlines traced from cineangiograms.'An accurate, noninvasive technique for determining left ventricular volume and ejection fraction in children has not been established. 10 Measurements of ventricular volume and ejection fraction by M-mode echocardiography may be compromised by segmental dysfunction or paradoxical septal motion. In studies in adults," 16 two-dimensional echocardiography is more accurate than M-mode echocardiography for estimating ven-