经导管封堵外科结扎术后再通的动脉导管未闭

目的：评价经导管封堵外科结扎术后再通的动脉导管未闭（PDA）的效果。方法：1995年6月至2000年11月，14例外科结扎术后再通的PDA患者进行了经导管封堵术，男5例，女9例，年龄4－48岁，平均13岁。外科手术至介入治疗的时间为1个月至22年。经股静脉途径置入Amplatzer封堵器和Rashkind封堵伞，经股动脉途径置入可控弹簧圈。分别于术后24h ,1,3,6个月及1年以上行X线胸片和超声心动图随访。结果：再通PDA为漏斗型12型，管型2例。动脉导管最窄处直径为1－8mm，平均4mm。封堵后10min，主动脉弓降部造影示无残余分流11例，微量残余分流3例。技术成功率100％，无并发症。术后24h 声心动图检查均无残余分流，所有患者均于术后1-2d出院，10例随访1－18个月，未发现封堵器移位及PDA残余分流。结论：经导管封堵外科结扎术后再通的PDA是一种有效方法，可以替代外科二次手术。

Transcatheter closure of recanalized patent ductus arteriosus after surgical ligation

Objective To evaluate the effectiveness of transcatheter closure of recanalized patent ductus arteriosus (PDA) after surgical ligation. Methods Between June 1995 and November 2000, 14 patients (5 male, 9 female) with recanalized PDA after surgical ligation underwent transcatheter closure, their median age was 13 years (range 4 to 48 years). The time between surgical ligation and the interventional procedure ranged from one month to twenty-two years. Implantations of Amplatzer duct occluder and Rashkind occluder were performed transvenously. Cook coil occlusions was performed transarterially. Follow-up with X-ray radiograph and echocardiography was made 24 hours, 1, 3, 6 months, and more than 1 year after the procedure. Results Twelve PDAs were of funnel shape, and the remaining two PDAs were of tubular shape. The median minimum diameter of recanalized PDA after ligation was 4 mm (range 1 to 8 mm). Aortograms ten minutes after closure showed complete closure and trivial residual shunt in 11 and 3 patients, respectively. The technical success rate was 100%, and there were no complications. Echocardiography showed complete closure in all patients within 24 hours. All patients were discharged in one to two days after the procedure. At a follow-up of one to eighteen months in ten patients, there were no migration of devices and residual PDA. Conclusion Transcatheter closure using Amplatzer duct occluder, coil (Cook company or Pfm company) and Rashkind occluder was an effective method for patients with recanalized PDA after surgical ligation. It may be an alternative to second surgery owing to its safety, reliability, min-invasiveness, and short hospitalization.