Angiographic Classification And Transcatheter Closure Of Patent Ductus Arteriosus

Part 1 Angiographic Classification of Patent Ductus Arteriosus and Clinical ImplicationsObjective To study the angiographic appearance of patent ductus arteriosus (PDA) and provide information for clinical treatment. Methods Between July 1994 and October 2002, 483 patients (142 male, 341 female) with isolated PDA underwent aortography before attempted transcatheter closure of PDA, mean age was 14.6±11.4 (range 0.8 to 63) years. Left lateral aortography was performed in 482 patients; among them, additional aortography in right anterior oblique 30°-50° or left anterior oblique 60°-80° (or plus caudal 20°) projection was performed in ten patients. One patient with mirror-image dextrocardia underwent aortography in right lateral projection. Results The configuration of PDA was classified into six types. Four hundred and twenty (87%) patients had funnel shape PDA, the mean minimum diameter of PDA was 4.2±1.6 (1-15) mm. Three patients (0.6%) had window shape PDA, the diameters of PDA were 8.0mm, 9.0mm, and 9.0mm, respectively. Thirty four patients (7.0%) had tubular shape PDA, the mean diameter of PDA was 5.4±3.8 (0.8-20) mm. Eleven patients (2.3%) had rosary shape PDA, the mean minimum diameter of PDA was 2.1 ± 0.5 (1~3.7) mm. Ten patients (2.1%) had finger shape PDA, the mean minimum diameter of PDA was 1.5±0.4 (1.0-3.0) mm. Five patients had irregular shape PDA, the minimum diameters of PDA were 1.2mm, 2.1mm, 3.2mm, 4.0mm, and 6.0mm, respectively. Conclusion The morphology of PDA varied considerably. The awareness of these variations is helpful for clinical...