23 Zhou Weicai's value is beyond normal

The 23rd week of pregnancy, which is 5-6 months of pregnancy, is the second trimester. At this time, four-dimensional color ultrasound can be used to check whether the fetus is normal and rule out malformations. This meets the basic requirements of excellent parenting. So what indicators can be checked by 23-day four-dimensional color Doppler ultrasound? What should pregnant women pay attention to during the Great Wall four-dimensional color ultrasound examination? How to determine whether the requirements for eugenics are met through four-dimensional color ultrasound examination?

When a woman is 23 weeks pregnant, she can undergo a four-dimensional color ultrasound to perform major fetal malformation examination. At this time, the reference value of the fetal biparietal diameter is about 56 mm, the reference value of the femur length is 40 mm, the head circumference is 209 mm, and the abdominal circumference is 189 mm. It is just that due to the different genetic and nutritional factors of each woman, the size of the fetus may vary from one week to another. For women with irregular menstrual cycles, the size of the fetus shown on color ultrasound may be very different from the gestational age.

What can four-dimensional color Doppler ultrasound detect?

Four-dimensional color ultrasound is used to observe the growth and development of the fetus in utero, screen for fetal malformations, and provide an accurate scientific basis for the early diagnosis of congenital surface malformations and congenital heart diseases of the fetus.

1. Fetal facial deformities: such as cleft lip and palate; nervous system: anencephaly, hydrocephalus, microcephaly, spina bifida and meningocele.

2. Digestive system: umbilical enterocele, visceral exstrophy, intestinal atresia and megacolon, etc.

3. Urinary system: hydronephrosis, polycystic kidney disease, megacystis, and urethral obstruction.

4. Other deformities: short limbs, conjoined twins, cleft lip, four-chamber heart, polyhydramnios, oligohydramnios, etc.