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- Title
The relation between fetal nasal bone length and biparietal diameter in the Korean population.
- Authors
Shin, Joong Sik; Yang, Jae Hyug; Chung, Jin Hoon; Kim, Moon Young; Ryu, Hyun Mee; Han, Jung Yeol; Choi, June Seek
- Abstract
Objective To evaluate the relation between fetal nasal bone length (NBL) and biparietal diameter (BPD) at 15-19.9 (20) weeks of gestation by ultrasonography in the Korean population. Methods The study population included 1268 Korean women (aged between 19 and 45 years) with a singleton pregnancy who registered at the Maternal Fetal Medicine Unit of Samsung Cheil Hospital between September 2003 and February 2005. Ultrasound measurements of NBL were performed using a strict sagittal plan of the fetal head. Other fetal biometry profiles were conducted before amniocentesis for fetal karyotyping. Results NBL and fetal biometry profiles were measured successfully in 77.9% (988/1268) of the fetuses. NBL was found to increase linearly as a function of BPD (P < 0.001) with a median NBL of 4.4 mm (range 1.9-7.9). NBL increases through 15-19.9 (20) weeks of gestation were given by the equation NBL (mm) = 0.0836 × BPD (mm) + 1.368 ( R2 = 0.1, P < 0.001). Conclusions Fetal NBL and BPD are linearly related in the second trimester. Fetal NBL in the Korean population is likely to be shorter than that reported for Caucasians and African-Americans. Copyright © 2006 John Wiley & Sons, Ltd.
- Publication
Prenatal Diagnosis, 2006, Vol 26, Issue 4, p321
- ISSN
0197-3851
- Publication type
Academic Journal
- DOI
10.1002/pd.1402