The video will explain about the hole in heart by Dr. Smita Mishra, Paediatric Cardiologist, Associate Director - Jaypee Hospital. Blood comes to right side of heart and then goes to lungs and then left side of heart. There is no connection between right and left side of heart. If there is any defect in the heart valve, blood directly passes between them. It can affect lungs and baby can have lot of respiratory problems.