Table 3.
Basic treatment regimens for first trimester screening
| Characteristics | N (%) |
|---|---|
| Correction of the due date by measured crown-rump length | |
| No | 1 (2.63) |
| Always | 8 (21.1) |
| Depending on the distance to the originally expected date of delivery | 29 (76.32) |
| Conducting first-trimester screening with ß-HCG and PAPP-A | |
| Yes | 24 (63.16) |
| No | 4 (10.53) |
| Optional | 10 (26.32) |
| Offer of first-trimester screening without laboratory services | |
| Yes | 14 (36.84) |
| No | 11 (28.95) |
| Optional | 13 (34.21) |
| Does the performance of laboratory services depend on performed risk calculation of first-trimester screening | |
| Yes | 10 (26.32) |
| No | 15 (39.47) |
| Optional | 13 (34.21) |
| Performance of an amniocentesis/chorionic villus sampling autonomously | |
| Yes | 17 (44.74) |
| Dependence of the decision for amniocentesis/chorionic villus sampling | |
| Nuchal translucency measurement / limits of nuchal translucency | 20 (52.63) |
| Biochemistry (ß- HCG and PAPP A) | 7 (18.42) |
| Combination of first-trimester screening and biochemistry | 30 (78.95) |
| Limit value of the nuchal translucency measurement for performing amniocentesis/chorionic villus sampling | |
| > 2.5 mm | 9 (23.68) |
| > 3.0 mm | 16 (42.11) |
| > 3.5 mm | 7 (18.42) |
| No value | 4 (10.53) |