Objective. Balloon atrioseptostomy is an emergency procedure in congenital heart diseases requiring an atrial septal defect to increase cardiac output in right-sided obstructive lesions or to improve mixing in patients with transposition of the great arteries. This procedure is currently performed with both fluoroscopy and echocardiography. The main objective is to describe our experience with the use of balloon atrioseptostomy under echocardiographic and fluoroscopic guidance in patients under 3 months. Materials and methods. A descriptive, comparative and retrospective study in patients in whom balloon atrioseptostomy was performed under echocardiographic and fluoroscopic guidance between 2018 and 2023 in a referral hospital in Peru. Results. 36 patients were analyzed, of which 21 were from the fluoroscopy group. and 15 patients from the echocardiography group. More than 2/3 o...

The aortopulmonary window is a rare congenital heart defect, and the aortopulmonary window without other associated defects represents up to 25% of these defects. Surgical closure has been and is the gold standard in many cardiovascular centers. However, percutaneous closure is being performed with different types of occluders, considering the type of defect, size, and edges in order to avoid complications such as valvular or coronary ostial involvement. We present the case of an infant with an aortopulmonary window who underwent percutaneous closure with a muscular ventricular septal defect occluder device without complications and was discharged 48 hours after the procedure.