AIM In the current review study, we present recent data regarding the importance of intertwin estimated fetal weight (EFW) and crown rump length (CRL) discordance for the prediction of adverse perinatal outcome both in monochorionic and in dichorionic diamniotic gestations. RESULTS Twins with significant weight disparity are associated with higher rates of perinatal morbidity and mortality, r...

To investigate the effect of intrauterine positions on fetal growth throughout gestation, data from a total of 65 gilts (n = 784 fetuses) that were slaughtered at assigned days of gestation (d 43, 58, 73, 91, 101, and 108) on a project to evaluate fetal mineral deposition were used. Placenta units were removed from the uterus, and position, sex, weight, and crown-rump length (CRL) of each fetus...

In view of the importance now attached to the care of the premature infant, it is highly desirable that stock should be taken of the definitions and classifications in general use, and that the possibility of their improvement should be frequently reviewed. Whilst it is generally recognized that the prospects of survival depend to a much greater extent on functional maturity, e.g. of respiratio...

INTRODUCTION The purpose of this study was to obtain precise knowledge of fetal biometric measurements, in particular crown-rump length (CRL). Our results have been carefully compared to equations found in the literature. MATERIALS AND METHODS Single-operator measurements of 2,123 spontaneous pregnancies from a general French population provided new statistical relationships between fetal age...

BACKGROUND As low birthweight (i.e., birthweight < 2500 g) is a major determinant of neonatal mortality and morbidity, the pre-delivery detection of low birthweight is clinically advantageous. This study was performed to determine whether ultrasound is suitable for use in primary screening to detect low birthweight newborns. METHODS The primary outcomes included sensitivity, specificity, and ...

Meishan embryos transferred to recipient females on day 2.5 are larger, contain greater numbers of trophectoderm cells, and secrete greater amounts of estradiol-17β when gestated in a Yorkshire compared with Meishan uterus to day 12. Additionally, placentae of Meishan conceptuses are larger when gestated in a Yorkshire compared with Meishan uterus throughout gestation. Embryonic estradiol-17β s...