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Hearts with biventricular AV connection and single VA connection: mode of VA connection.
| Mode of VA | Aortic atresia + IVS | Pulmonary atresia + IVS | |
|---|---|---|---|
| connection | (single pulmonary outlet) | (single aortic outlet) | |
| 66 hearts | 58 hearts |
||
| Hypoplastic | Dilated | ||
| RV 51 | RV 7 | ||
| Absent pulmonary valve | – | 25 | 4 |
| Imperforate pulmonary valve | – | 26 | 3 |
| Absent aortic valve | 61 | – | – |
| Imperforate aortic valve | 5 | – | – |
AV, atrioventricular; IVS, intact ventricular septum; RV, right ventricle; VA, ventriculo-arterial.
