Background: Inter-atrial septum (IAS) stenting in duct-dependent congenital heart disease patient has shown to be an effective way to maintain inter-atrial blood flow, however it is still considered a high risk procedure and inter-atrial septum stenting remains a low-frequency procedure. Method: A single-center observational cohort study was carried out at the National Cardiovascular Center Harapan Kita (NCCHK) between April 2019 and April 2023. This study included duct-dependent congenital heart disease patients. The extracted data were baseline characteristics, clinical findings, complications, and outcomes of the patients. Result: Eleven patients with duct-dependent physiology were intervened with inter-atrial septum stenting. The patients were 4 females and 7 males with the median age of implantation being 150 days (range 11-703 days) and the median weight being 3.9 (range 2.8-9) kg, with 2 patients weighing less than 3 kg. The average stent diameter was 8.50 (2.03) mm with an average length of 24.45 (7.94) mm. Non-restrictive atrial flow was successfully achieved in 90.90% of the procedures, corresponding to 10 patients. Conclusion: Inter-atrial septum stenting in duct-dependent congenital heart disease patients pro-duces reliable patency with a very good intra-procedural success rate. © 2024 The Author(s).