Dr. Smita Mishra, Associate Director, Paediatric Cardiologist, Jaypee Hospital, Noida, will discuss about the intervention done in atrial septic defect in this video. Atrial septic defect can be intervened within two years. Atrial defects can be of four types and atrial secundum is the commonest defect. She will also explain the conditions where the atrial defects are intervened within one year of life. Classical symptoms should be evaluated and if the baby is not growing well then early intervention is necessary.