title: Left-to-right shunt in atrial septal defect: quantification by echocardiography.
mesh_terms: D000293:Adolescent; D000328:Adult; D004452:Echocardiography; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis* / Q000473:pathology / Q000503:physiopathology; D006346:Heart Septum / Q000503:physiopathology; D006352:Heart Ventricles / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000503:physiopathology; D014261:Tricuspid Valve / Q000503:physiopathology