The best time to do four-dimensional femoral screening

The four-dimensional fetal fetal abnormality screening is an examination method performed in the second trimester. It can check whether the fetus has any symptoms of deformity, such as incomplete development of the limbs or heart deformity and other internal and external deformities. It is usually performed between 18 and 24 weeks of pregnancy, and the examination is performed using the four-dimensional color ultrasound method. The fetal malformation screening can clearly observe whether the fetus's appearance and internal organs are well developed.

When is the best time to do four-dimensional fetal anomaly screening?

Generally, color ultrasound can be done to screen for antenatal fetal abnormalities around 18-24 weeks of pregnancy. Pregnant women usually go to the hospital for examination at 20 weeks of pregnancy, and it is best not to exceed 28 weeks of pregnancy. Because the fetus's brain is undergoing rapid development at around 24 weeks, the structure of the fetus has been formed, the size of the fetus and the amniotic fluid are moderate, there is plenty of space for movement in the uterus, the fetal bone echo is less affected, and the image is clearer.

What should be paid attention to during fetal anomaly screening?

1. Make an appointment in advance and choose the best time. The most appropriate time for color Doppler ultrasonography to exclude abnormalities is around 18-24 weeks of pregnancy. Within this gestational age range, the fetus is of moderate size and the ultrasound imaging is clearer. Most abnormalities can be excluded at this time. Therefore, expectant mothers need to make an appointment with the hospital in advance to avoid missing the time. A gestational age that is too young or too old is not suitable for fetal malformation detection. However, the actual examination time may vary depending on the expectant mother.

2. No need to fast or hold urine

There is no need to fast or hold urine for fetal malformation screening. As long as the pregnant woman goes to a regular hospital for examination within the corresponding time, fetal malformation screening can be performed. Half an hour before the color Doppler ultrasound, the expectant mother can eat something and drink some water to increase fetal movement.

3. Pay attention to your attire

Color Doppler ultrasound examines the fetus in the uterus, so before going for the examination, it is best for the expectant mother to wear separate tops and bottoms to facilitate the examination.

4. Relax appropriately

If the expectant mother is nervous before the color ultrasound, she should relax appropriately to relieve the tension to prevent her nervousness from affecting the normal activities of the fetus and interfering with the normal test results.

After reading the above content, I believe everyone has a certain understanding of when to do the four-dimensional fetal fetal fetal screening. The four-dimensional color ultrasound is more vivid than the three-dimensional one, and it can observe the dynamics of the fetus. It is very helpful for observing the baby's facial features, nervous system, urinary system, etc., so it is recommended that mothers do this four-dimensional fetal fetal fetal fetal fetal screening. I wish you good health.