主动脉缩窄(coaretation of aorta,CoA)指胸降主动脉先天性局限性狭窄,狭窄区域一般在动脉导管和主动脉连接处[1]。严重的CoA患者主动脉狭窄部位管腔可接近闭锁,但主动脉壁是延续的。CoA发病率在西方国家约占先天性心脏病的5%~8%,我国发病率约占先天性心脏病的3%~5%。病变部位通常在动脉导管附近,常伴动脉导管未闭(patent ductus arteriosus,PDA)[2-3],可伴发其他 Coarctation of aorta (CoA) refers to congenital localized thoracic aortic stenosis, stenosis region is generally in the ductus arteriosus and aortic connections [1]. Severe CoA patients with aortic stenosis lumen near the closure, but the aortic wall is continuous. CoA incidence in Western countries accounts for about 5% to 8% of congenital heart disease, the incidence of congenital heart disease in China accounts for about 3% to 5%. Lesions usually in the vicinity of the arterial catheter, often accompanied by patent ductus arteriosus (PDA) [2-3], may be associated with other