Abstract
Background: Amplatzer® Duct Occluder （ADO） was introduced in our hospital in 2010. This study aimed to analyze role of transcatheter coil occlusion for patent ductus arteriosus （PDA） before and after introduction of the ADO.
Subjective and Methods: Group A （14 patients） who received coil occlusion in the era before introduction of ADO （2007-2009）, group B （12 patients） and group C （13 patients） underwent transcatheter occlusion of the PDA in the era after introduction of ADO （2010-2012） using coil for group B and ADO for group C, respectively. Age, body weight, and narrowest PDA diameter were analyzed. PDA morphology was determined using the Krichenko classification.
Results: Age and body weight were comparable among groups A （7 ± 16 years, 18.3 ± 17.9 kg）, B （8 ± 15 years, 18.4 ± 12.4 kg）, and C （23 ± 33 years, 22.4 ± 21.3 kg）, while the narrowest PDA diameter was significantly different between groups B （1.4 ± 0.7 mm） and C （2.8 ± 2.0 mm）. The narrowest PDA diameter in group B tended to be small and could be corrected using a single coil in most patients. In one group B patient whose PDA was typed with the diameter >2 mm, ADO was not used as the length of the PDA was too long.
Conclusion: Following the introduction of ADO, transcatheter coil occlusion was utilized only to correct the PDA with a diameter of ≤2 mm, and most cases required only a single coil. However, we suggest that coil occlusion should be utilized to treat long such as type D even if whose diameter is >2 mm.
