Key result
Ostium primum atrial septal defects were associated with atrioventricular valve deformity and mitral insufficiency in 4 of 5 patients, enabling differential diagnosis from ostium secundum defects.
Case Report (n=5)
Identifies key clinical and electrocardiographic features, such as mitral insufficiency and left axis deviation, that help differentiate ostium primum from ostium secundum atrial septal defects.
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May aid differentiation of ASD subtypes when valve abnormalities are evident; leaves open generalizability beyond this small case series.
Blount et al. (1956) conducted a case report in Ostium primum atrial septal defect (n=5). Ostium primum atrial septal defect was evaluated. Ostium primum atrial septal defects were associated with atrioventricular valve deformity and mitral insufficiency in 4 of 5 patients, enabling differential diagnosis from ostium secundum defects.
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