1. Alternative Technique for the Ostium Primum Defect Repair: A Free Wall Flap of Right Atrium 
Massimo Massetti, MD, Gerard Babatasi, MD, Eugenio Neri, MD, Andre Khayat, MD 
The Annals of Thoracic Surgery 
Volume 63, Issue 6, Pages (June 1997)
DOI: /S (97)

2. Fig. 1
A septal incision, lateral to the fossa ovale, is performed to mobilize the free edge of the ostium primum (arrows) to the leaflet plane of the atrioventricular valves.
The Annals of Thoracic Surgery  , DOI: ( /S (97) )

3. Fig. 2
Once the ostium primum defect has been repaired, the atrial septal defect is transformed to an ostium secundum-type defect.
The Annals of Thoracic Surgery  , DOI: ( /S (97) )

4. Fig. 3
The ostium secundum defect is closed with a free wall flap of right atrium rotated (90 degrees) to the septal plane. The right atrium is then closed by suturing of the superior edge of the atriotomy to the base of the flap (interatrial groove).
The Annals of Thoracic Surgery  , DOI: ( /S (97) )