Causes of fetal renal dysplasia 1. Reasons for expectant mothers:
(1) Heredity: 40% of the difference in fetal birth weight comes from parents' genetic factors, among which maternal genetic factors have the greatest influence. It is reported that there are 2%-5% chromosomal abnormalities in intrauterine growth retardation.
(2) Nutrition: Malnutrition or gastrointestinal malabsorption of pregnant women will affect the growth and development of the fetus, such as partial eclipse, anorexia, vomiting during pregnancy, chronic gastritis, chronic enteritis, etc., leading to protein and insufficient calorie intake.
(3) Pregnancy complications and complications: If pregnant women suffer from essential hypertension, chronic nephritis, renal hypertension, diabetes, erythema, heart disease, pregnancy-induced hypertension syndrome, overdue pregnancy, multiple pregnancy, oligohydramnios and anemia before and after pregnancy, the incidence of intrauterine growth retardation will increase significantly. Especially pregnant women with chronic vascular diseases, due to vascular sclerosis, placental vasospasm and infarction, and reduced blood perfusion, the kinetic energy of placental transport is affected, which makes the fetus lack nutrients, oxygen and other trace elements necessary for growth, leading to intrauterine growth retardation.
(4) Smoking, alcoholism and drug abuse: Smoking is closely related to teratogenesis, infertility and abortion. Nicotine in tobacco leaves causes placental vasospasm and affects placental blood circulation, which is harmful to both active and passive smoking. Animal models have been confirmed. Excessive drinking can cause fetal malformation and intrauterine growth retardation, and children with mental retardation are four times higher than the control group.
Second, the baby's reasons:
(1) Intrauterine infection: Pregnant women suffer from infectious diseases, and pathogens can infect embryos and fetuses through the placenta vertically, which is called intrauterine infection. Intrauterine infection causes placental inflammation and placental dysfunction, which often leads to abortion, fetal malformation and intrauterine growth retardation.
(2) Abnormal fetal development: such as hereditary dwarfism, congenital heart disease, single umbilical artery malformation, etc. Will affect the growth and development of the fetus.
(3) Placenta factor: Placenta is an important organ for material exchange between the fetus and the mother, which plays an important role in the growth and development of the fetus. When the placenta is calcified, infarcted or too small, functional villi decrease and blood vessels are abnormal, the blood flow of uterus and placenta decreases, which leads to intrauterine growth retardation.
Symptoms of fetal renal dysplasia 1, kidney deficiency, kidney deficiency, etc. The fetus cannot survive after birth, and mainly dies of severe pulmonary dysplasia. Unilateral kidney deficiency without other malformations has a good prognosis and can survive normally without affecting life expectancy.
2, ectopic kidney, ectopic kidney refers to the position of the kidney has changed, can be ectopic to the pelvic cavity or chest cavity. The prognosis is good and generally asymptomatic, but the incidence of urinary tract infection after the birth of ectopic kidney increased significantly.
3. Congenital ureteropelvic junction obstruction, regardless of unilateral or bilateral obstruction, has a good prognosis. The degree of fetal renal pelvis dilatation is not always related to the renal function of postpartum infants, but generally speaking, the more serious intrauterine dilatation is, the worse the renal function of newborns is.
Every expectant mother's physique is different, so there will be a certain gap in the fetus in her stomach, but there will also be a normal range, which cannot be lower than too much and cannot be exceeded. First of all, prenatal examination should be done in time during pregnancy, and then you should eat well. You shouldn't eat anything too salty or too big. You should pay attention to your healthy diet.