Reference ranges for foetal nasal bone length, prenasal thickness, and interocular distance at 18 to 24 weeks' gestation in low-risk pregnancies
Küçük Resim Yok
Tarih
2017
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
BIOMED CENTRAL LTD
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Background: The aim of the present study was to establish the normal ranges for foetal nasal bone length (NBL), prenasal skin thickness (PNT), interocular distance (IOD), and ratio of prenasal thickness to- nasal bone length (PNT/NBL) at 18-24 weeks using two-dimensional (2D) ultrasound.& para;& para;Methods: This study was a retrospective study of prenatal ultrasonographic records from 407 foetuses between 18 and 24 weeks gestational age (GA). The NBL, PNT, IOD, PNT/NBL ratio, biparietal diameter (BPD), and femur length (FL) were investigated. The relationships among NBL, PNT, IOD, PNT/NBL, and GA were evaluated. Additionally, descriptive statistics for NBL, PNT, and SOD values for each gestational week were obtained.& para;& para;Results: There was a significant association between GA and NBL, PNT, and IOD between 18 and 24 weeks. NBL increased from a mean of 5.5 mm to 8.3 mm, PNT increased from a mean of 3.5 mm to 5.1 mm, and SOD increased from a mean of 11.1 mm to 14.5 mm. PNT/NBL ratio did not change with gestational age.& para;& para;Conclusions: This study showed normal ranges for NBL, PNT, IOD, and PNT/NBL ratios for foetuses between 18 and 24 weeks in low-risk pregnancies. There was a positive linear relationship between GA and NBL, PNT, and IOD. The PNT/NBL ratio might be a more useful measurement than NBL or PNT alone.
Açıklama
Anahtar Kelimeler
2D ultrasound, Foetal nasal bone length, Prenasal thickness, Interocular distance
Kaynak
BMC PREGNANCY AND CHILDBIRTH
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
17
