This is a pilot study on feasibility, efficacy and safety of IBS ® for implantation in the PDA in duct-dependent cyanotic CHD, and its objective is to investigate the feasibility, safety and efficacy of iron resorbable stent implantation in the PDA as initial palliation of cyanotic CHD with duct-dependent PBF.

Study type: Interventional, prospective, single arm, investigator initiated Study population: 10 patients Primary purpose: Treatment Follow up: Review at 1 month and thereafter 3 monthly (clinical examination and echocardiography for stent patency, SaO2 measurement. Serum Iron and Ferritin levels will be measured before procedure and at follow ups. From 6 months onwards the patients will be assessed for the need of repeat catheterization with a view of surgery or for continued observation.

Study endpoints: 9 months post implant or the following: 1)Patients are subjected for surgical repair of CHD; 2)Death before surgical repair; 3)Unplanned re-intervention with additional stenting procedure.

Inclusion Criteria:

• Weight >3.0 kg
• Age <3 months
• Patients with uncomplicated PDA morphology (the PDA is not tortuous i.e. relatively straight

Exclusion Criteria:

• Weight <3 kg, age >3 months
• Angiographic criteria-tortuous PDA
• Family history of diseases related to iron overload or iron disorder e.g. hereditary hemochromatosis
• Other severe congenital anomalies with life expectancy <12 months