Referenzwerte für das fetale Nasenbein im ersten Trimenon in einem Normalkollektiv

Abstract

The reference ranges for the measurement of the fetal nasal bone length are similar to the findings in the published literature. Only with a knowledge of reference ranges for nasal bone length in normal fetuses can conclusions be drawn about the presence/absence of the bone or the presence of a hypoplastic nasal bone. Further studies are necessary to confirm these results and to obtain larger datasets to assess nasal bone as a quantitative marker.

Interobserver Variability of the Measurement of Fetal Nasal Bone Length between 11 + 0 and 13 + 6 Gestation Weeks among Experienced and Inexperienced Sonographers

“…Thus the results of this study can confirm previous findings of published datasets [13]. Therefore, the sonographic detection of NB and the feasibility and repeatability of the measurement increase as gestation advances [17]. Conversely, the variability of measurement results between sonographers decreases as shown in published datasets and in this study.…”