Table 3 The results of CMA and karotyping on 234 cases with single NT ≥ 2.5 mm
NT (mm) | Number | Aneuploidy | BCAs | CNV | CNV | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
P | LP | ||||||||||
2.5–2.9 | 89 | 3 | (3.37%) | 0 | (0.00%) | 1 | (1.12%) | 1 | (1.12%) | 0 | (0.00%) |
3.0-3.4 | 78 | 5 | (6.41%) | 1 | (1.28%) | 2 | (2.56%) | 2 | (2.56%) | 0 | (0.00%) |
3.5–4.4 | 46 | 7 | (15.22%) | 0 | (0.00%) | 0 | (0.00%) | 0 | (0.00%) | 0 | (0.00%) |
4.5–5.4 | 13 | 3 | (23.08%) | 1 | (7.69%) | 0 | (0.00%) | 0 | (0.00%) | 0 | (0.00%) |
≥ 5.5 | 8 | 3 | (37.50%) | 0 | (0.00%) | 0 | (0.00%) | 0 | (0.00%) | 0 | (0.00%) |
All | 234 | 21 | (8.97%) | 2 | (0.85%) | 3 | (1.28%) | 3 | (1.28%) | 0 | (0.00%) |