What is the reason for the slow growth of the fetus?

During the pregnancy check-up, if you find that the fetus is growing slowly, you should pay attention. The fetus's development is slower than other fetuses of the same gestational age. At this time, you must understand the reasons for the slow growth of the fetus. There are reasons for both the pregnant woman and the fetus. For example, malnutrition during pregnancy may lead to slow fetal development. If the fetus has some genetic diseases or chromosomal abnormalities, it may also cause such symptoms.

What is the reason for the slow growth of the fetus?

1. Reasons related to pregnant women 1. 40% of the difference in fetal weight comes from the genetic factors of the parents, with the genetic factors of the pregnant woman having a greater impact, which is related to the pregnant woman's pre-pregnancy weight, age during pregnancy, and number of parities. If the pre-pregnancy weight is less than 54kg, or the weight during pregnancy is too small or too large, the chance of intrauterine growth retardation of the fetus will increase. 2. Malnutrition of pregnant women, especially insufficient supply of protein and energy, long-term hypoxemia or poor oxygen transport capacity, pregnancy complicated by kidney disease, severe anemia, severe heart disease, pregnancy-induced hypertension syndrome, chronic hypertension and other chronic vascular diseases, affect uterine and placental blood flow and function, leading to fetal malnutrition, immune diseases, endocrine diseases, and infectious diseases can all affect fetal growth and development. 3. When pregnant women have bad habits such as smoking, drinking, abusing drugs, and their social and economic conditions are poor, the chance of intrauterine growth retardation of the fetus increases.

⑴The most direct and convenient method is the weighing method. In the late pregnancy, the weight gain of pregnant women is about 0.5 kg per week. If the weight gain is slow or stagnant without obvious changes in the pregnant woman's clothes, the possibility of intrauterine growth retardation should be suspected. ⑵ Uterine height measurement method: use a soft tape measure to measure the height from the midpoint of the upper edge of the pubic symphysis to the fundus of the uterus, and draw the measured height on the uterine height chart (also known as the pregnancy chart), and measure once a week. If the fetus is on the low weight curve or below the curve for 2 to 3 times in a row, it can be diagnosed as intrauterine growth retardation. ⑶ Calculate the fetal development index method, that is, uterine height (cm) - 3×[month (4 weeks is counted as 1 month) + 1]. If the difference value is less than -3, it means there may be intrauterine growth retardation; between -3 and +3 is a normal weight baby; greater than +3 the fetus may be too large. If a pregnant woman is diagnosed with intrauterine growth retardation through self-examination, she should go to the hospital for further confirmation.