BACKGROUND First trimester growth restriction may predict miscarriage or adverse outcome later in the pregnancy, but determinants of early growth are not well described. Our objective was to examine factors influencing fetal and gestational sac size in the first trimester. METHODS Prospective observational study of 1828 singleton pregnancies before 12 weeks gestation. Maternal characteristics...

AIMS To establish the normative data distribution of nuchal translucency (NT) thickness in Thai fetuses. METHODS A cross-sectional multicenter study was conducted among 6,455 women with singleton pregnancies and gestational age between 10 and 14 weeks. For each case, the fetal crown-rump length (CRL) and NT were measured by transabdominal ultrasound. Transvaginal ultrasounds were used in poor...

BACKGROUND The origins of respiratory disease might be traced back to exposures during fetal life. The aim of the present study was to explore whether there was a relationship between fetal size and respiratory outcomes at 5 years of age in the context of fetal exposure to vitamin E. METHODS A longitudinal birth cohort study was recruited (n=1924). Antenatal ultrasound scan results were identif...

OBJECTIVE To determine the value of measuring fetal femur and humerus length at 11-14 weeks of gestation in screening for chromosomal defects. METHODS Femur and humerus lengths were measured using transabdominal ultrasound in 1018 fetuses immediately before chorionic villus sampling for karyotyping at 11-14 weeks of gestation. In the group of chromosomally normal fetuses, regression analysis ...

Abstract Background To establish reference ranges of fetal facial profile markers and study their correlations with crown-rump length (CRL) during the first trimester (11 ~ 13 + 6 weeks’ gestation) in a Chinese population. Methods Ultrasonographic images measuring nuchal translucency (NT) were retrospectively selected randomly normal fetuses whose parents both Chinese. The included inferior ang...

Although calcification of the permanent teeth is not radiologically discernible until the first month after birth (GARN, LEWIs, and POLACHECK, J Dent Res 38: 135, 1959) developmental stages of I1, 12, Ml, and often C may be demonstrated in histological sections of jaws well before the 39to 41-week age horizon. It is of interest, therefore, to determine whether intra-uterine development of these...

there are morphological and reproductive physiological differences between swamp buffalo (bubaluscarabanensis) and river buffalo (bubalus bubalis). the development of fetus weight and fetus biometry wasreported in river buffalo and other animals but not in swamp buffalo. the aim of this study was to describethe inherent variability in fetus related measurements during swamp buffalo pregnancy. t...

Metatarsal growth was studied in 780 human fetal metatarsal bones, crown-rump length ranging from 120 to 260 mm and gestational age ranging from 14 to 23 wk postconception. Total length, diaphyseal length and diameter were measured and statistical analysis performed. Means and standard deviations for each measurement were calculated at 1 wk intervals. These data were correlated with crown-rump ...