Electrocardiographic changes in atrial septal defects: ostium secundum defect versus ostium primum (endocardial cushion) defect.
D004694:Endocardial Cushion Defects; D054089:Endocardial Cushions; D006343:Heart Septal Defects; D006344:Heart Septal Defects, Atrial; D006346:Heart Septum / Q000002:abnormalities*; D006801:Humans
HEART SEPTUM/abnormalities