Methods 103 cases of PDA were treated through different interventional therapy,52 through the arteriovenous double approach,51 through the single venous approach(14 angiography and 37 ultrasound).

• 方法103例PDA患者经三种不同介入方法治疗,其中单静脉入路超声法37例,单静脉入路造影法14例,动静脉双入路法52例。