Ostium secundum ASD is closed between 2-4 years of age.
Ostium primum defect: If not associated with other cardiac lesions like PDA or VSD, then it can be followed by a cardiologist and closed between 2-3 years of age. But if associated with moderate to severe mitral valve regurgitation, then it should be closed by one year of age.
Sinus venous type of defect: It Should be closed by 4-5 years of age.
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