论文部分内容阅读
动脉导管未闭(PDA)是一种常见的先天性心血管疾病。动脉导管连接肺动脉总干与降主动脉,是胎儿期血液循环的主要渠道。出生后一般在数
Patent ductus arteriosus (PDA) is a common congenital cardiovascular disease. Pulmonary artery connected with the general artery and the descending aorta, fetal blood circulation is the main channel. Usually after birth in the number