Premium
Mid‐second trimester measurement of fetal nasal bone length in the Japanese population
Author(s) -
Kanagawa Takeshi,
Fukuda Hirotsugu,
Kinugasa Yukiko,
Son Mihyon,
Shimoya Koichiro,
Murata Yuji,
Yokoyama Takuhei,
Hashimoto Hiroyuki,
Isaka Shigeyuki,
Nagamatsu Masaaki
Publication year - 2006
Publication title -
journal of obstetrics and gynaecology research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.597
H-Index - 50
eISSN - 1447-0756
pISSN - 1341-8076
DOI - 10.1111/j.1447-0756.2006.00429.x
Subject(s) - medicine , gestation , reference range , fetus , population , obstetrics , singleton , gestational age , pregnancy , genetics , environmental health , biology
Aim: We carried out a preliminary study to compare the nasal bone length (NBL) and biparietal diameter/NBL (BPD/NBL) ratio between the Japanese and white populations. Methods: Three hundred and fifty nine (359) singleton fetuses of healthy Japanese couples were examined from June 2004 to October 2005. NBL was measured by the strict midsagittal section. The reference range of NBL was established from cross‐sectional data between 15 and 25 weeks’ gestation. Results: The success rate of obtaining reliable NBL was 93% (333/356). There were 330 fetuses (93%) available for constructing a reference range from the population. The median NBL increased from 3.2 mm at 15 weeks’ to 7.6 mm at 25 weeks’ gestation. The median of BPD/NBL ratio was 9.01. Conclusions: We demonstrated that NBL was significantly shorter and BPD/NBL was significantly greater in the Japanese population than those in the white and black populations.