What is an atrial septal defect (ASD)? An ASD is a hole in the wall between the heart’s upper chambers. One of the most common heart defects in infants, ASDs vary in size and in the severity of symptoms they may cause. In some children, an ASD may close on its own without any treatment. If the ASD is still present by age 3, it likely will require surgery. Learn more. http://bit.ly/2KZB48E | The Society of Thoracic Surgeons (STS)

10K views · 103 reactions | Atrial septal defect is a congenital heart condition in which a hole in the wall of the heart separates the top two chambers and allows blood to transition from the left atrium to the right atrium ultimately causing enlargement of the right heart chambers. Find out more about how this condition can affect adults later in life. https://mayocl.in/2XrbD8J | Mayo Clinic | Facebook