Neonatal growth standards

Just-born baby is the first large, long, short limbs, a bit too slow, sleep and more rapid breathing and heartbeat, signs of its growth and development of a variety of normal levels are as follows:
(1) body weight is a reflection of the level of neonatal an important indicator of development, at birth the average body ~ 3000 grams, normal Fan ~ 2500 ~ 4000 grams. (2) length of neonatal bone length is a reflection of an important indicator of development level, the average birth length of 50 cm, accounting for the first long length of 1 / 4.
(3) neonatal body temperature regulation and development center is still not perfect, temperature instability. In vitro from the mother to the newborn, drop in body temperature are generally around 2 ℃, 12 ~ 24 hours a gradual pick-up and stable in 36 ℃ ~ 37 ℃.
(4) vital capacity breathing of newborns small, less oxygen, far from being able to meet their metabolic needs, breathing only through the number of speeding up to meet the shortfall. Normal neonatal breathing 35 per minute to 45 times, crying at up to 60 times / min. As the respiratory center is not perfect, the performance of new-born babies for fast shallow breathing, uneven.
(5) neonatal heart not the law of the pulse, while slow, while fast, the general average of 120 times / min, the fastest up to 140 times / min.
(6), head circumference and head circumference chest for the general 3l ~ 35 cm, head circumference chest circumference less than about 1 cm. If the head circumference than the chest too much, may be microcephaly; head circumference than the large chest too much, may be hydrocephalus.

In addition, the newborn should be observed, such as whether a sucking reflex feeding behavior. And should pay attention to observation of the light, an audible response, with a view to early detection of any congenital anomalies and defects.
Where less than 37 weeks gestational age newborns, birth weight, regardless of their size, are referred to as preterm infants (premature infants). Physical weak premature infants, crying light, irregular breathing, skin and delicate, and the fetal capillary length, less subcutaneous fat, the first relatively large, there is soft hair, nail means soft, plantar hallux roots only 1 ~ 2 Article foot pattern, heel smooth, the lower limbs tension. Premature infants to maintain their body temperature is not easy, to be warm, or to be placed in the warm box. Poor resistance to disease, easy to get sick. Some premature babies do not swallow, feeding difficulties, to be inserted nasogastric tube feeding, therefore, premature babies need special care, and some need hospitalization.