Fate of atrial flap used in repair of total anomalous pulmonary venous connection.

Histological changes in the right atrial flap used in repair of total anomalous pulmonary venous connection were observed when the patient underwent repair of peripheral pulmonary venous stenosis after two months. The flap, 35 mm in length and 15 mm in width, was thin and soft. Microscopically, endocardium and myocardium were preserved well, with only moderate thickening of the epicardium. We can anticipate the viability of the right atrial flap, but care should be taken to keep blood supply to the flap intact.