Is it normal not to gain weight in late pregnancy?

Is it normal not to gain weight in late pregnancy?

The process from the early stages of pregnancy to delivery is very wonderful. The growth of the fetus in the uterus also takes time. The weight of the fetus will gradually increase over time. If the weight of the fetus does not increase in the late pregnancy, this phenomenon is abnormal. This phenomenon is caused by delayed fetal development and less nutrition absorption. After birth, the fetus will be lighter than a normal child, which will cause certain harm to growth and development. The following is a detailed introduction.

The growth of the fetus in the uterus has a corresponding timetable. In the late pregnancy, the main focus is on weight gain and cardiopulmonary development. Every year, approximately 3% to 10% of pregnant women have fetuses that have retarded or restricted intrauterine growth, commonly referred to as intrauterine growth retardation. Intrauterine growth retardation increases the risk of fetal death. Factors that lead to intrauterine growth retardation include maternal, fetal and placental factors. The weight of a fetus at birth varies. Many people think that it doesn't matter if the baby is born small, as long as they are well fed.

In fact, this idea is incorrect, because light weight may be caused by intrauterine growth retardation of the fetus, which is mainly manifested as the fetal weight is lower than the normal fetus of the same gestational age. The birth weight of the fetus after 37 weeks of pregnancy is less than 2500 grams, which belongs to fetal growth retardation in late pregnancy. Maternal factors: The main causes of maternal growth retardation include high blood pressure, kidney disease, diabetes, lung or heart disease, etc. Smoking and drinking during pregnancy also increase the chance of intrauterine growth retardation of the fetus. Another most important reason is poor diet or low maternal weight.

Fetal factors Genetic defects and chromosomal abnormalities can cause intrauterine growth retardation. Fetal exposure to bacterial infections, including toxoplasmosis, rubella, cytomegalovirus, and herpes simplex or varicella, can cause intrauterine growth retardation. Multiple pregnancies also increase the risk of intrauterine growth retardation; twins who share a placenta can develop twin-twin transfusion syndrome, if one of them receives too much blood supply and the other receives too little, resulting in developmental delays.

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