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Frontomaxillary facial angle measurements in euploid Korean fetuses at 11 weeks' to 13 weeks 6 days' gestation.

Authors
 Sun Rye Jeon  ;  Hyung Min Choi  ;  Young Ho Roh  ;  Young Han Kim  ;  Ga Hyun Son  ;  Ka Hyun Nam  ;  Yong Won Park  ;  Ja-Young Kwon 
Citation
 JOURNAL OF ULTRASOUND IN MEDICINE, Vol.29(11) : 1565-1571, 2010 
Journal Title
 JOURNAL OF ULTRASOUND IN MEDICINE 
ISSN
 0278-4297 
Issue Date
2010
MeSH
Adult ; Crown-Rump Length ; Face/diagnostic imaging* ; Face/embryology* ; Female ; Humans ; Imaging, Three-Dimensional ; Pregnancy ; Pregnancy Trimester, First ; Prospective Studies ; Republic of Korea/ethnology ; Statistics, Nonparametric ; Ultrasonography, Prenatal/methods*
Keywords
ethnic differences ; euploid fetuses ; first trimester ; frontomaxillary facial angle ; Korean population
Abstract
OBJECTIVE: The purpose of this study was to evaluate the distribution of fetal frontomaxillary facial angles in a euploid Korean population at 11 weeks' to 13 weeks 6 days' gestation. METHODS: Three-dimensional volumes of the fetal head were obtained from women with low-risk singleton pregnancies at 11 weeks' to 13 weeks 6 days' gestation who consented to this prospective study. Only fetuses with either a normal karyotype confirmed by amniocentesis or no abnormalities after delivery were considered eligible for analysis and were characterized as euploid for the purposes of this study. Women with multiple pregnancies and those who were lost to follow-up and fetuses with abnormal karyotypes or anomalies diagnosed in utero or postnatally were excluded. The frontomaxillary facial angle was measured twice offline by a single examiner. Cases were categorized by crown-rump length (CRL) in 10-mm intervals for analysis of the frontomaxillary facial angle. RESULTS: Among 375 enrolled cases, 158 were eligible for frontomaxillary facial angle analysis. The overall mean frontomaxillary facial angle ± SD was 88.6° ± 9.7°. The mean frontomaxillary facial angle for fetuses with a CRL of 40 to 49 mm (n = 35) was 93.7°; 50 to 59 mm (n = 53), 92.6°; 60 to 69 mm (n = 36), 85.3°; and 70 to 79 mm (n = 34), 81.0°, showing an inverse relationship between the mean frontomaxillary facial angle and CRL (r = -0.5334; P < .0001). The proportion of cases with frontomaxillary facial angles of 85° or greater was 60.8%, and that of cases with angles of 90° or greater was 37.3%. CONCLUSIONS: Ethnic differences in frontomaxillary facial angle measurements should be considered when incorporating the frontomaxillary facial angle in fetal aneuploidy screening in the Korean population.
Files in This Item:
T201003462.pdf Download
DOI
10.7863/jum.2010.29.11.1565
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Obstetrics and Gynecology (산부인과학교실) > 1. Journal Papers
Yonsei Authors
Kwon, Ja Young(권자영) ORCID logo https://orcid.org/0000-0003-3009-6325
Kim, Young Han(김영한) ORCID logo https://orcid.org/0000-0003-0645-6028
Nam, Ka Hyun(남가현)
Park, Yong Won(박용원)
Son, Ga Hyun(손가현)
Jeon, Sun Rye(전순례)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/102252
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