Table 3 Reference intervals for GSD, YSD, CRL and HR based on GW
Gestational weeks | n | GSD (mm) | CRL (mm) | YSD (mm) | HR (bpm) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
5th | 50th | 95th | 5th | 50th | 95th | 5th | 50th | 95th | 5th | 50th | 95th | ||
6 | 20,272 | 14.0 | 19.0 | 25.5 | 2.3 | 3.5 | 5.7 | 3.1 | 3.7 | 4.7 | 103.0 | 117.0 | 128.0 |
7 | 2969 | 16.5 | 26.0 | 35.5 | 5.3 | 10.1 | 14.8 | 3.5 | 4.3 | 5.3 | 124.0 | 146.0 | 164.5 |
8 | 4109 | 26.5 | 36.0 | 46.0 | 14.4 | 20.2 | 22.8 | 4.1 | 4.8 | 5.6 | 158.0 | 174.0 | 186.0 |
9 | 2267 | 31.5 | 40.0 | 50.0 | 20.2 | 23.4 | 29.8 | 4.2 | 5.0 | 5.8 | 162.4 | 176.0 | 188.0 |
10 | 799 | 37.0 | 46.5 | 57.5 | 29.0 | 34.5 | 41.2 | 4.4 | 5.3 | 6.4 | 160.0 | 174.0 | 186.0 |