Subanalysis was performed on **data** from the Japanese Society of Pediatric Interventional Cardiology (JPIC) stent survey, a retrospective questionnaire-based survey of stenting for congenital heart diseases from May 1995 to February 2009 at 14 leading hospitals in Japan. 10 The decision for stent implantation was made at each hospital, and stents were deployed using standard techniques. Hemodynamic measurements as well as angiography were performed pre-and post-stent implantation. Pressures were measured directly at catheterization.