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Atrioventricular Septal Defect (AVSD)
Definition |
Central heart defect involving atrial and ventricular septums and their connecting valves |
| Incidence | 0.11-0.36:1000 live births (higher in second trimester) |
| Diagnosis | Ultrsound |
| Gestation at diagnosis | 16-20 weeks |
| Known chromosomal or genetic association | Yes, 40% of cases have trisomy 21, 20% have trisomy 18,13 or heterortaxy snydrome |
| Further investigations | Karyotype +/- Fetal Echocardiogram |
| Differential Diaganosis | Isolated ASD VSD Heterotaxy |
| Prognosis | Usually require surgery at 4-6 months 5% operative mortality |
| Recurrance risk | 3% |
| Research Studies | None |
Further information for clinicians please click here
Patient information leaflet on congenital heart defects from British Heart Foundation (please click here to download)
Link to British Heart Foundation Site
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