Some pregnant mothers think that the baby can be born after 37 weeks, and some pregnant mothers think that the baby can be born after 39 weeks. Is there a difference in the time when the baby is born after 37 weeks and 39 weeks? Generally, after 37 weeks of pregnancy, the organs in the baby's body have matured. Being born at this time does not mean that it is beneficial to the baby. The American medical community believes that a baby born at 39-4 1 week is a real full-term baby. With the improvement of scientific research level in modern medical field, many experts also suggest that pregnant mothers should give birth to their babies after 39 weeks of pregnancy, and the risk of illness of babies born after 39 weeks is also the smallest. But then again, how to judge whether it is a full-term baby?
In fact, whether it is full-term or not can't be seen from the time, mainly depending on the following aspects:
1, the weight of the newborn The weight of the newborn is an important indicator to measure whether the baby is full-term. The weight of a normal baby is between 2500 and 4000 grams, with an average of 3200 grams. Boys are slightly heavier than girls. Newborns weighing more than 4000 grams are called macrosomia, and those weighing less than 2500 grams are low birth weight. Newborns weighing more than 4000 grams and less than 2500 grams may have risk factors. After the newborn is born, it will lose weight because of feeding failure and urine excretion. Parents don't have to worry. This is actually a physiological weight loss. The baby's weight begins to rise to birth weight 3-4 days after birth, and then it will increase rapidly. The younger a child is, the faster he will gain weight.
2. The average length of a full-term baby at birth is 50 cm, and there is little difference between boys and girls. There are also differences in the length of normal newborns, but the difference is very small. However, premature infants younger than gestational age are lower than this ratio, and giant infants older than gestational age will exceed this ratio. The baby is about 25 cm older in the first year after birth, so it is about 75cm； when it is one year old; After that, the average annual growth rate is about 5 cm, so the baby's body length after 2~ 12 years old is equal to the age multiplied by 5 plus 75 cm. Any body length exceeding the standard 10% or less than 10% is regarded as abnormal.
3. Newborn physical function So what's the difference between premature and full-term infants? Premature babies still have some influence on babies. Compared with term infants, premature infants are not as healthy as term infants. Due to the immature development of various organs, the ability of white blood cells to swallow bacteria is poor and the infant's immune function is poor in premature infants. Premature babies also grow much faster than full-term newborns. If properly fed, they will grow rapidly and are prone to rickets and other nutritional deficiencies. Premature infants may have abnormal blood components, fewer platelets than normal newborns, and are prone to bleeding, anemia and other symptoms. In addition, the renal function, body temperature and breathing of premature infants will be unstable. Therefore, premature babies must be carefully cared for.