Full-term sample

Full-term infants are the most common infants whose birth weight is 25% lower than their normal weight, with infants between 38 and 42 weeks of gestational age and weighing less than 2500 grams. Every year in the world, the birth weight of about 240,000 babies is 2500g, of which 30% -40% of the term infants are less than the gestational age. %, Infants less than gestational age weigh more than 2500g and have more non-uniform types. Such babies are full because of the gestational week, but their postnatal ability is low, which is prone to meconium aspiration, hypothermia, erythrocytosis, hypoglycemia Congenital anomalies such as intrauterine infection, especially developmental, neurobehavioral and mental retardation, and the mortality rate of infants less than 8 times the normal term infants, so the treatment of infants less than the fetal age has recently received attention.