Jenni R, Ritter M, Vieli A, Hirzel H O, Schmid E R, Grimm J, Turina M
Division of Cardiology, University of Zurich, Switzerland.
Br Heart J. 1989 Feb;61(2):167-71. doi: 10.1136/hrt.61.2.167.
Conventional Doppler echocardiographic techniques for the estimation of blood flow ratios depend on the precise measurement of the diameters of the aorta and the pulmonary artery and the mean blood flow velocities in these vessels. A simpler and quicker method is described, based on the calculation of the systolic time integrals of the amplitude weighted mean velocities from continuous wave Doppler spectra within the great arteries. In 30 controls the mean (2 SD) ratio of pulmonary to systemic blood flow averaged 0.952 (0.085). The results of the new technique showed a good agreement with those of quantitative dye dilution and oximetry in 16 patients with intracardiac left to right shunts.
用于估算血流比率的传统多普勒超声心动图技术依赖于对主动脉和肺动脉直径以及这些血管中平均血流速度的精确测量。本文描述了一种更简单、更快捷的方法，该方法基于对大动脉内连续波多普勒频谱中振幅加权平均速度的收缩期时间积分进行计算。在30名对照组中，肺循环与体循环血流的平均（±2标准差）比率平均为0.952（0.085）。在16例心内左向右分流患者中，新技术的结果与定量染料稀释法和血氧测定法的结果显示出良好的一致性。
