The left to right shunt rate (f) and the transverse sectional area of ductus arteriosus (a) were calculated by color Doppler flow convergence method in 20 patients with patent ductus arteriosus.
用彩色多普勒血流会聚法对20例动脉导管未闭患者的左向右分流率F进行测定，并根据F值计算出动脉导管的横截面积A。
Objective To establish a rat model of pulmonary hypertension induced by left-to-right shunt and explore the influence of high pulmonary blood flow on pulmonary vascular collagen remodeling.
目的建立左向右分流所致肺动脉高压大鼠模型，了解高肺血流量对肺血管胶原代谢的影响。
The obstruction to right ventricular outflow creates a right-to-left shunt that leads to cyanosis.
右心室肥大引起右向左分流，导致发绀。
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