Hanseus K, Björkhem G, Lundström N R
Department of Pediatrics, University Hospital, Lund, Sweden.
Pediatr Cardiol. 1994 Sep-Oct;15(5):211-8. doi: 10.1007/BF00795729.
To establish normal values for Doppler-derived parameters of cardiac function, pulsed-wave Doppler recordings from the ascending aorta were obtained in 80 healthy infants and children. Stroke and minute distance, peak velocity, mean acceleration, acceleration and ejection time intervals, and the acceleration/ejection time ratios were measured or calculated from the Doppler recordings. The relations between the Doppler parameters and heart rate, age, and body surface area were analyzed separately for the children below and above 6 months of age. The normal values for the two groups are given as the median and range and as the mean and standard deviations, respectively. For the older age group, strong negative correlations with heart rate were found for stroke distance and ejection time, suggesting that these parameters should be evaluated in relation to heart rate. Intraobserver and interobserver reproducibility were studied in 10 children. Good reproducibility was found for stroke and minute distance, peak velocity, and left ventricular ejection time. For measurements related to acceleration, the reproducibility was less good.
为建立心脏功能多普勒衍生参数的正常数值，对80名健康婴幼儿和儿童进行了升主动脉脉冲波多普勒记录。从多普勒记录中测量或计算出搏出和每分距离、峰值速度、平均加速度、加速和射血时间间期，以及加速/射血时间比值。分别分析了6个月以下和6个月以上儿童的多普勒参数与心率、年龄和体表面积之间的关系。两组的正常数值分别以中位数和范围以及均值和标准差表示。对于较大年龄组，发现搏出距离和射血时间与心率呈强负相关，提示这些参数应结合心率进行评估。对10名儿童进行了观察者内和观察者间的可重复性研究。发现搏出和每分距离、峰值速度以及左心室射血时间具有良好的可重复性。对于与加速度相关的测量，可重复性较差。
