title: [Symptomatic isolated atrial septal defects (ostium secundum) in the infant].
abstract: Poorly tolerated solitary ASD in the baby is rare. The main criteria for diagnosis have been drawn from a series of 9 cases. The symptoms are often atypical, especially at first: usually a marked pansystolic murmur, a tricuspid flow murmur, late appearance of a doubling of B2, and a non-specific cardiac outline, except for the cardiac enlargement and the increased pulmonary vascularity. The ECG is rather more helpful, with constant RVH. At catheterisation, there is a major left-to-right shunt, the pressures in the right and left atria are equal, and pulmonary hypertension is rare. It is particularly common to find associated extra-cardiac abnormalities. Under medical treatment the prognosis is good, and early surgical closure is not normally required.
mesh_terms: D000367:Age Factors; D000790:Angiocardiography; D004562:Electrocardiography; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006439:Hemodynamics; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D011379:Prognosis
vernacular_title: Les communications interauriculaires isolées (ostium secundum) symptomatiques chez le nourrisson