69 downloadsPulmonary atresia is a form of congenital heart disease, in which the pulmonary valve does not form properly. The pulmonary valve is located on the right side of the heart and regulates blood flow to the lungs. This defect prevents blood from flowing into the lungs to gather oxygen. Pulmonary atresia is often associated with patent ductus arteriosus and can occur with or without a ventricular septal defect. Symptoms, which usually occur within the first few hours of life, include cyanosis, fast breathing, fatigue, poor eating habits, and shortness of breath. The CT scan, from which the STL files are derived, is from a 3 week old infant suffering from pulmonary atresia, ventricular septal defect with confluent branch pulmonary arteries and patent ductus arteriosus (PDA). In addition, there is a right aortic arch with a tortuous PDA inserting into the right pulmonary artery as well as an atrial septal defect (ASD). The left subclavian artery originates first off the aorta with a common origin of the left and right carotid arteries followed by the right subclavian artery. Five STL files have been zipped and available for download. One blood pool model for extracardiac structural analysis, and four files for the myocardial segmentation. One file of the entire heart and then three files, (1,2 and 3) of the three slice method with the center slice aligning with a short axis slice and containing all valves. The heart model was designed to be printed in three slices and held together with magnets. The model is provided for distribution on Embodi3D with the permission of the author, pediatric cardiologist Dr. Matthew Bramlet, MD, and is part of the Heart Library. We thank Dr. Bramlet and all others who are working to help children with congenital heart problems lead normal and happy lives. It is distributed by Dr. Bramlet under the Creative Commons license Attribution-NonCommercial-NoDerivs. Please respect the terms of the licensing agreement. A US quarter is shown for scale in the images below.