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4 chamber view
Ostium primum defect = Ostium primum atrioseptal defect = a subtype of partial atrioseptoventricular defects.
Bidirectional flow through defect.
Normal situs, atrioventricular concordance, well balanced cavities. Output vessels were normal (not shown).
Such a finding leads to screening for associated anomalies and karyotype for Down syndrome.