Atrial Septal Defect (Asd)

(Ostium secundum defect) In an atrial septal defect (ASD) is one or more openings in the inter-atrial septum, which can cause a left-right shunt and volume overload in the right atrium or the right ventricle. Children are rarely symptomatic, but can have long-term complications after the age of 20 years. These include pulmonary hypertension, heart failure and atrial arrhythmias. Adults and, more rarely, adolescents may have exertional fatigue and atrial…