Table 2.
Sources of Pulmonary Blood Flow Before Connection of Discontinuous Pulmonary Arteries
| Patients, No. |
PA Occlusion |
Early Death or Fontan/Glenn Takedown |
|
|---|---|---|---|
| Unilateral superior cavopulmonary anastomosis | 30 | 5 | 5 |
| Contralateral lung | |||
| Systemic–to-PA shunt (1 or more) | 12a | 1 | 0 |
| Antegrade from ventricle | 9 | 1 | 3 |
| Systemic–to-PA collaterals | 7 | 3 | 1 |
| Contralateral superior cavopulmonary anastomosis | 1 | 0 | 1 |
| Classic atriopulmonary Fontan connection | 1 | 0 | 0 |
| No superior cavopulmonary anastomosis | 14 | 2 | 2 |
| Separate systemic–to-PA shunts to each lung | 9b | 1 | 1 |
| Unilateral systemic–to-PA shunt, systemic–to-PA collaterals | 5 | 1 | 1 |
PA = pulmonary artery.
a,b
At the time PA discontinuity was diagnosed, 7 (3a and 4b, respectively) of these patients had sole supply to 1 lung by systemic-to-PA collaterals, but a systemic-to-PA shunt was placed to the nonconfluent PA before establishment of PA continuity.