Figure 1: Duct-dependent stenting. (a) Primary injection and site of arterial duct separation from left subclavian artery. (b) Ductal stenting in the distal of patent ductus arteriosus. (c) Injection in the right shunt and lack of proper blood flow to the lung due to stenosis of the shunt site. (d) Severe stenosis at the proximal part of the previous stent. (e) Second stent implantation telescopically in proximal part before the previous stent