Oclusão Percutânea da Persistência do Ducto Arterioso

Background: Patent ductus arteriosus is a congenital condition with high morbidity, especially in preterm infants of extremely low birth weight, representing 5% to 10% of congenital heart diseases. Our objective was to describe the approaches used at a reference hospital for the percutaneous occlusion of PDA. Methods: We conducted a retrospective study on the transcatheter treatment of patent ductus arteriosus from April of 2008 to April of 2010. Results: Forty-seven cases were reviewed and most of them (78.8%) were treated with FlipperTM coils while the remaining patients received the AmplatzerTM device. Ductal morphological configuration was Krichenko type A in 89.4% (34 in the FlipperTM coil group and 8 in the AmplatzerTM group), type D in 6.4% (2 in the FlipperTM coil group and 1 in the AmplatzerTM group) and type E in 4.2% (1 in each group) of patients. Pre-catheterization minimum diameters were 2.6 ± 0.8 mm and 3.8 ± 1.6 mm for the FlipperTM coil and AmplatzerTM groups, respectively. Immediate total occlusion of the defect was obtained in the control angiography in 72.3% of the patients. Seven patients treated with the FlipperTM coil received additional coils and two patients treated with the AmplatzerTM device presented minimal residual shunts. There were no procedure-related complications. In the follow-up after hospital discharge, one patient presented minimal residual shunt at the echography, 45 days after catheterization. Conclusions: Percutaneous patent ductus arteriosus occlusion has proven to be safe and effective in most cases.