Table 7.
Types and proportions of chromosomal abnormalities detected in prenatal diagnosis
| Karyotype | AMA | MSS | NIPT | MSS + NIPT |
PUF | POH | PCAC | Total | Proportion (%) |
|---|---|---|---|---|---|---|---|---|---|
| Trisomy 21 | 80 | 51 | 72 | 23 | 16 | 2 | 244 | 43.81 | |
| Trisomy 18 | 19 | 22 | 6 | 5 | 3 | 55 | 9.87 | ||
| Trisomy 13 | 3 | 1 | 3 | 3 | 10 | 1.80 | |||
| 47,XXY | 7 | 1 | 10 | 2 | 20 | 3.59 | |||
| 47,XXX | 8 | 3 | 6 | 1 | 18 | 3.23 | |||
| 45,X | 1 | 3 | 1 | 3 | 8 | 1.44 | |||
| 47,XYY | 1 | 2 | 4 | 7 | 1.26 | ||||
| 48,XXYY | 1 | 1 | 2 | 0.36 | |||||
| 69,XXX | 1 | 1 | 0.18 | ||||||
| 69,XXY | 1 | 1 | 0.18 | ||||||
| Structural | 40 | 46 | 23 | 3 | 22 | 6 | 8 | 148 | 26.57 |
| Mosaic | 10 | 20 | 6 | 1 | 1 | 1 | 1 | 40 | 7.18 |
| Marker | 1 | 1 | 1 | 3 | 0.54 | ||||
| Total | 171 | 149 | 134 | 35 | 48 | 11 | 9 | 557 | 100.00 |