Fig. 3. Postmortem histopathology following PDA occlusion with the Amplatzer Piccolo™ Occluder.
A, B Term infant with a history of congenital heart block and respiratory failure died 66 days post-implant (Patient #9). Aortic (A) and Pulmonary Artery (B) views demonstrate complete endothelialization and intraductal device placement. C, D Preterm infant with a history of coarctation requiring stent placement and respiratory failure died 141 days post-implant (Patient #3). Aortic (C) and Pulmonary Artery (D) views demonstrate complete endothelialization and intraductal device placement.