“…Chaoui et al [11] found chromosomal abnormalities in 22.7% (46/203) of the fetuses with CHD including trisomy 18 (n Z 15), trisomy 21 (n Z 13), trisomy 13 (n Z 5), 45,X (n Z 5), triploidy (n Z 2), and other rearrangements (n Z 6). Prenatal diagnosis of an atrioventricular septal defect has been associated with a high risk of aneuploidy up to 49.1e57.9% [12,13]. Delisle et al [12] reported aneuploidy in 57.9% (22/ 38) of the fetuses with an atrioventricular septal defect including trisomy 21 (n Z 19), trisomy 18 (n Z 1), trisomy 13 (n Z 1), and mosaic trisomy 19q (n Z 1).…”