Congenital Heart Disease… Timing of Intervention for closure of defects in Acyanotic Congenital Heart Disease 5 Jan 20204 Jan 2020 Atrial Septal Defect (ASD) Ostium secundum ASD is closed between 2-4 years of age.Ostium primum ASD: If not associated with other cardiac lesions like PDA or VSD, then it can be followed by…