1·Objective To study the correlation between perinatal fetal prognosis and flow ratio of ductus venosus to umbilical vein (DV/UV).
目的本实验主要研究胎儿静脉导管（DV）血流量与脐静脉（UV）血流量比与围产儿预后的关系。
2·Objective To explore the effect of transcatheter closure patent ductus arteriosus in infants.
目的探讨经导管堵塞婴幼儿动脉导管未闭的疗效。
3·Controversy exists over the operation for closure of complicated patent ductus arteriosus (PDA) under cardiopulmonary bypass (CPB) with deep hypothermia and low perfusion flow.
关于重症复杂型动脉导管未闭(PDA)是否应在深低温低流量体外循环下行闭合手术，尚有争议。
4·The pulmonary arteries were well developed, with the pulmonary blood flow supplied principally by a large patent ductus arteriosus (PDA) in 9 patients;