This episode is about left-to-right shunt congenital heart diseases. We will talk about ventricular septal defect, atrial septal defect, patent ductus arteriosus, eisenmenger syndrome and coarctation of the aorta. We will revise the embryology, causes, pathogenesis, clinical features, diagnosis and the treatment. Transcription of this episode can be found on www.medmints.net/8. This podcast is not a substitute for professional medical advice but only for educational purposes.