Abstract
Development of the newborn infant is estimated by gestational ages, liveborn birthweight and stature, another measurement and maturation's sign.
But for 9 months the intrauterine fetal to be grows unseen. Maturation of fetal infant is prominently associated with gestational ages. Only has it been recognized that in a given infant the degree of maturation of any one organ system could be relatively accelerated or delayed.
Obstetrics made recently remarkable progress for the medical electronics. However, fetal growth estimation and presumption of the newborn birthweight are difficult. Intrauterine growth retardation and small-for-dates infant that must be prevent. Maternal and child health care is very important to midwife.
This time, I was presumption of the newborn birthweight by next method.
1 Biporietal diameters of the fetus head by diagnostic ultrasound (electronic scan)
Y=900X-5,200
2 Jacobson's formula W=(F-12)×155
3 Araki's formula W=(124.4F)-985.0
4 an overall presumption by midwife students
Consequently, an overall presumption was nearly newborn birthweight, so that presumption of the newborn birthweight must be estimated by gestational ages, developmental curve of fundus uteri, biporietal diameters of the fetus head and anothers.
