When does a baby s lungs usually reach maturity?

If the child is a normal full-term infant and has no congenital developmental abnormalities, the lung development is basically completed at birth, but the ventilation function of the lungs is relatively lower than that of adults. We often use lung capacity to represent the respiratory function of the lungs, before the age of 20, the lung capacity gradually increases with age, and after the age of 20, the increase is not obvious.

First of all, parents should adjust their children's dietary structure, reasonably match their children's diet, develop the habit of regular and quantitative eating, and let children eat some light and nutritious food, especially foods rich in high-quality protein and vitamins, which can enhance physical fitness, improve children's immunity, and reduce the occurrence of pneumonia.

At the same time, parents can also let their children eat more red vegetables and fruits, whether these foods are rich in lycopin and polyphenols, not only has the effect of enhancing immunity, but also has the effect of removing unnecessary active oxides in the body of antioxidants, so as to promote blood circulation and enhance the ability of cardiopulmonary function, in addition, the anthocyanins contained in blue and purple vegetables and fruits also have the effect of improving lung function.

Parents want to enhance children's lung function, it is recommended to take children out to exercise, especially can take children to the park outdoors, the outdoor environment of the park will be better, so that children can be exposed to fresh air, parents should let children do some deep breathing, can improve the child's oxygen intake, promote blood vessel contraction activities, is conducive to improving lung function, parents let children run moderately and do chest expansion exercises, can also enhance lung function.

Pulmonary function test is one of the necessary examinations for children's respiratory diseases, mainly to check children's lung volume function and lung ventilation function, in order to understand the physiological and pathological status of their respiratory system, for the early detection of lung and airway lesions, for chronic cough, bronchial asthma, cough variant asthma, pneumonia and other diseases of the diagnosis and differential diagnosis, disease severity assessment and prognosis, to evaluate the efficacy of drugs or other methods, to identify the causes of dyspnea, It is of great clinical value to evaluate the tolerance of surgery and the monitoring of critically ill patients.

The infant pulmonary function test is special, and the baby should be allowed to rest quietly and be emotionally stable for 15 minutes before the examination.

As long as the baby is full-term birth, the lungs will generally be fully mature, and the lungs are not easy to be infected after the baby is born, but parents should not take it lightly and always pay attention to the baby's health.

Your baby's lungs usually don't mature until 37 weeks. Almost all babies born at 37 weeks can breathe on their own. Even infants who have difficulty breathing usually need only a minimum amount of assisted ventilation (such as supplemental oxygen).

Generally, when you reach the age of one, you may be more mature, and then at the age of two, basically everything that we adults can eat and children can eat.

Normally, the lungs of the fetus can mature after 33 weeks of pregnancy. At the latest, it will be fully mature after 38 weeks. Week 32:

The fetus is 48 cm long and weighs 2200 grams. The development of the respiratory and digestive systems is close to maturity. Almost all babies born at 37 weeks and after can breathe on their own.

When do your baby's lungs usually mature? Your baby's lungs usually don't mature until 35 weeks. Babies born between 30 and 34 weeks need external instruments to support their breathing.

Generally, they use respirators temporarily. The child lives in water before birth. Alveolar cells (when they are in the womb and the child is encased in amniotic fluid) secrete surfactant in preparation for exposure to the air.

Surfactant is secreted by type 2 epidermal alveolar cells. Its main features: is to overcome water pressure.

<> fact, only a small fraction of amniotic fluid samples can be analyzed for the ratio of lecithin globulin myosin. To open the alveoli and let air in, alveolar epithelial cells secrete surfactant to reduce the surface tension of the water. Lecithin is the main component of this surfactant.

Other substances can be used to check. Amniocentesis can be used in many places, such as preterm birth, preplacenta, preeclampsia, diabetes, or severe rare cases. At 38 weeks of pregnancy, the baby is about to be born.

At this moment, basically every human organ in the child's body is there. Growth and development, most of the baby's lungs are mature by 34 weeks and can breathe alone, of course, the growth and development of each child. The conditions and standards are different.

Some children may still not be able to breathe after 38 weeks. At this time, if they are born, they need to. Carry out human assistance.

Almost all babies born between 30 and 34 weeks require appropriate artificial support, usually including temporary use of a respirator. The fetus lives in water before birth. The cells in the alveoli (the uterus is filled with amniotic fluid) secrete surfactant in preparation for contact with the air.

Surfactant is secreted by type 2 epidermal alveolar cells to overcome water pressure. Because water molecules tend to aggregate, amniocentesis measurement of lung maturity can be used in many conditions, diabetes, or severe rare cases. Babies born between 30 and 34 weeks need an external device to support their breathing.

Usually, the lungs of the fetus at 38 weeks gestation have matured. At 37 weeks' gestation, the fetus is full-term and begins to shed villi and hair in order to regulate its body temperature after birth. His lungs and brain will be fully mature.

At 38 weeks, the fetus's organs are ready for delivery and the lungs are the last to mature. However, there are still a small number of fetuses whose lungs are still immature at 38 weeks of pregnancy, mainly because the development of lung buds is stunted during embryonic development (such as a viral infection), or the fetus is malnourished and has slow growth.

It is mentioned that the lungs of female babies are faster than male babies, in fact, there is no scientific basis, it is a random situation, some female babies have good nutrient absorption during pregnancy, develop quickly, and their lungs mature earlier; Some male babies have poor nutritional intake during pregnancy or lung bud development disorders, resulting in late lung maturation. Normally, we consider the fetus to be mature by 37 weeks' gestation. At 38 weeks, the baby's lungs should be fully developed.

After term, you can give birth at any time and have met the conditions for full-term delivery.

At 37 weeks, the fetus is full-term, the brain and lungs are mature, and the fetus begins to shed villi and hair. After 38 weeks, the fetus's organs are ready for delivery and the lungs are finally mature. As long as the lungs are mature, there are generally no other major problems.

However, there will be some exceptions, such as a small number of sick fetuses, the lungs are still immature at 38 weeks, mainly because of slow embryonic development, long-term malnutrition, severe anemia, or dysplasia of the lungs caused by dysfunction during pregnancy, such as viral infections, hereditary diseases caused by chromosomal abnormalities, etc.

Therefore, it is very important for us to have regular prenatal check-ups to assess the condition of the fetus. If the fetus is full-term and all indicators are normal, then you can wait for delivery with peace of mind. Are male pets who give birth at 38 weeks pregnant mature in their lungs?

Generally speaking, most fetal lungs mature around 35 to 37 weeks, but there are individual differences in fetal lung development, some babies develop fast, some babies develop slowly, which is very normal.

The child's lungs will generally develop at about 28 weeks, and can be fully developed at 36 weeks.

After 32 weeks, the development of children's viscera will generally gradually mature, at this time, you need to adjust your diet structure in time, eat more fresh fruits and vegetables, for the child's growth and development to ensure sufficient nutritional supply, can make the child's growth and development better.

Generally, it can mature at 5 months of pregnancy, and at this time the child must be taken care of accordingly, and then you should also eat more fresh vegetables and fruits, and you should pay attention to appropriate fitness exercises, which will have great benefits for the development of the child.

When the fetal lungs matureNormally, the baby's lungs will mature by 37 weeks of gestationAt this time, the fetus can breathe on its own after birth. Even infants who have difficulty breathing usually need only a minimal amount of assisted ventilation.

What happens after birth when the fetal lungs are not fully developedBabies who are usually born between 30 and 34 weeks of pregnancy need external appliances to support the baby's breathing, and are usually temporarily ventilated. At this time, the baby should be injected with synthetic surfactants immediately after birth to help breathe.

The 35-week-old fetus has produced some surfactants, if the baby has steroids in the body, then the production rate of surfactants will be accelerated, and it is best for expectant mothers to choose injection or oral steroids.

Indicates what the activator is:

Babies live in water until birth, and the cells in the alveoli (in the womb, the baby is wrapped in amniotic fluid) secrete surfactants in preparation for exposure to air. The surfactant is secreted by the type 2 alveolar epidermal cells of the manuscript base and its main function is to overcome the tension of water. The reason is that the water molecules will gather together, and the alveoli in the lungs cannot enter the air due to the compression of water tension, and the surface activator can promote the alveolar wall to open up and better contact with the air.

Why does the maturation of the lungs of the fetus determine its birth?After the fetus's lungs are mature and born, they can breathe on their own and survive outside the body. In addition, when the baby's lungs are healed, the fetus releases something called emulsifier. When the expectant mother senses this message, the birth canal releases emulsifying enzyme, and the fetus is released from the fontanelle on the top of the head that does not close.

At this time, the fetus and the pregnant woman should be combined inside and out, the amniotic membranes are tortured, and the fetus is about to be born.

Secondly, while the fetus releases emulsifying enzymes, it will secretly store a large amount of oxygen and sugar in the pregnant woman's body and store it in the umbilical cord for its own use at birth, but only for 12 hours. Therefore, the fetus is born within 6-12 hours and is considered a normal birth. If it is not born for more than 12 hours, the fetus may be in a state of low oxygen and sugar, and brain damage may occur.

If you are not born for more than 24 hours, it will definitely lead to brain damage. Therefore, if the pregnant woman has been giving birth for too long, it is generally recommended to have a cesarean section.

Our lives begin as a small fertilized egg, implant and grow through the uterus. Over the course of nine months, the fetus grows body tissues and organs, grows limbs, and learns to move in the mother's belly. Each stage of the fetus has a different development process, so how many weeks does the fetal lungs mature in the mother's womb?

At 3 weeks gestation (when the head and hip diameter are about 3 mm), the tracheal diverticulum appears;

At 4 weeks of gestation, a septum appears between the esophagus and the tracheal diverticulum in the foregut to separate the trachea, that is, the brondchi and the primordium of the lungs, and at 5 weeks of gestation, lung buds appear, and the lung buds grow rapidly and form tree-like branches, the left lung bud is divided into two branches, and the right lung bud is divided into three branches, forming the lobe bronchi of the left lung and the right lung respectively, and its end is the blind end;

At 8 9 weeks of gestation, the lobe bronchial branches form the pulmonary segment bronchi, 8 9 branches of the left lung, and 10 branches of the right lung;

At 10 weeks of pregnancy 14 weeks, the trachea has branched;

At 24 weeks of gestation, secondary tracheal branches have been formed, with branches reaching about 17 grades, and finally terminal bronchioles and respiratory bronchioles, alveolar ducts and alveolar sacs with gas exchange function appear;

After 25 weeks of gestation, the alveoli, the original gas exchange unit, are formed, which are formed by the dilation of the bronchiole end;

A large number of alveoli have been formed at 28 weeks of pregnancy, and in addition to type I cells, type II cells with secretory function have appeared in the alveolar epithelium, and begin to secrete surfactant, which can carry out gas exchange, so premature infants at 28 weeks of pregnancy can survive from the mother.

In the early stage, there is more interstitium and less alveoli in the lungs, and in the later fetal stage, the interstitium gradually decreases and the alveoli gradually increase. It is generally believed that by 37 weeks of pregnancy, the fetal lungs are mature, and the type II cells secrete enough surface substances to reduce the surface tension of the alveolar surface, so that the alveoli can be moderately expanded and retracted, which can ensure that there is enough gas exchange after birth, but the lung maturity of some special fetal lungs is slower, such as babies with gestational diabetes. From newborn to early childhood, the lungs continue to develop and the number of alveoli continues to increase.

Babies are susceptible to lung infections because of their weak respiratory center, cough reflex, and gag reflex. Is the lung infection a serious in premature babies?

Neonatal postnatal pneumonia occurs after 3 days of birth, and the manifestations are different from infantile pneumonia in that fever, cough, and sputum production are common symptoms of pneumonia that are rare in newborns, especially premature infants and newborns within 2 weeks of birth, mainly manifested as poor spirit, rapid breathing, spitting up or choking on milk. Newborns near the first month of age may have cough. In severe cases, there may be refusal of milk, perioral or blue complexion, foaming at the mouth, dyspnea, such as concurrent respiratory failure and heart failure, the condition is critical and needs to be rescued.

In addition to signs of dyspnea and hypoxia, pulmonary rales are often less obvious than infantile pneumonia during physical examination, and scattered crackles can be heard in some children, and if extensive and dense fine crackles are heard on lung auscultation, it suggests heart failure and pulmonary edema.

Lung infections in premature infants can easily cause breathing difficulties and even endanger the life of the child, so it is necessary to be active**.