- ostium primum persistent
- an endocardial cushion defect characterized by a cleft in the basal portion of the atrial septum, usually associated with cleft mitral valve.
Medical dictionary. 2011.
ostium primum persistent
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atrial septal defects — atrioseptal defects congenital cardiac anomalies in which there is persistent patency of the atrial septum due to failure of fusion between either the septum secundum or the septum primum and the endocardial cushions. In ostium secundum d. there… … Medical dictionary
endocardial cushion defects — a spectrum of septal defects resulting from imperfect fusion of the endocardial cushions and ranging from persistent ostium primum to persistent complete common atrioventricular canal; see atrial septal d s and atrioventricularis communis … Medical dictionary
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