After pregnancy, many pregnant mothers said that they knew that B -ultrasound was important, but I didn’t understand how important it was.As we all know, the baby’s baby develops well in the abdomen of expectant mothers. The B -ultrasound is the most intuitive test.Through the B -ultrasound, pregnant mothers and doctors can intuitively pay attention to the baby’s condition. How big is the head and long legs. What sleeping position is today and check the abnormalities of maternal and infant abnormalities.
But there are so many B -ultrasound examinations throughout pregnancy. What is the difference between each time? Can you do it?B -ultrasound tells us of the information about the baby’s baby?Especially in terms of malformations …
In the early pregnancy, mid -term, and late stages, there are B -ultrasound checks on each stage of each stage. These six ultrasound checks are not less!
Clarify 6-8 weeks of pregnancy and pregnancy
It is mainly observed whether pregnancy is a single or multi -child, whether there are fetal heart beats, whether it is intrauterine pregnancy, whether there are pregnancy complications, etc., which mainly provides reference for the establishment of files for pregnant women.After 9 weeks of pregnancy, the number of pregnancy weeks and due period can be calculated according to the length value of the fetal head to the hip, and the abnormalities of embryo development can be found in time.The ultrasound during early pregnancy can be checked in two ways: abdominal ultrasound and vaginal ultrasound.The selection of the examination method requires a clinician to decide on the situation of pregnant women.Special explanation: If there is no heartbeat, you need to review the B -ultrasound regularly.If pregnant mothers have symptoms such as abdominal pain or vaginal bleeding, it is recommended to go to the hospital at any time to conduct relevant ultrasound examinations in accordance with the doctor’s advice.
"Early Tang" check for 11 ~ 13+6 weeks in pregnancy
NT is a part of early Tang’s screening (early Tang) ("Early Tang" test also contains blood drawing for biochemical indicators).By measuring the length of the fetal head and hip and the transparent layer of the neck (NT), it can help us do the screening of abnormal number of common chromosomal bodies, as well as determining the pregnancy age, judging the multiple pregnancy chori membranes and the amniocemic cystic structure, and understand the severe structural structure of the fetus.Deforms (for example: no brain, chest heart, lack of body loss, etc.), or even maybe dead tires.The NT threshold used in most hospitals is 2.5mm, and NT <2.5mm is normal. If NT> 2.5mm, it is prompted to increase NT.Consider further screening.The higher the value of the NT, the higher the risk of fetal chromosome, abnormal structure, and death.
Special explanation: NT check all pregnant women must do!NT inspections have strict time requirements. It needs to be completed in the 11th to 13 weeks+6 days. Specific mothers should not miss time. Doing it after 14 weeks will affect the accuracy of the screening.
"Middle Tang" checks 15-20 weeks+6 days in pregnancy
The "Central Tang" examination includes NF ultrasound examination and serum science screening in the middle of pregnancy.It is mainly to observe the growth measurement indicators of the fetus and placenta and amniotic fluid.Pregnant women who miss NT examinations do not have to worry. If you accidentally miss the NT checking time, you can also measure NF to add, especially for pregnant mothers with high risk factors, NF examination is necessary.
NF 排 类 -This kind of population is necessary to do it!岁 Over 35 years of age 超 There are childbirth in the Tang family. There are children with chromosomal abnormal child with chromosomal.Most of the abdominal ultrasound examination, if there is no special project, there is no need to "urinate".
Deformal large screening is 20-26 weeks of pregnancy
For the fetal system ultrasonic examination, also known as large rows, is currently an important ultrasonic examination of ZUI during the entire pregnancy.It is usually one of the ultrasound inspections of ZUI.This inspection mainly conducts systematic and detailed inspections on the head and neck, face, face, abdomen, and limbs.No brain, severe brain swelling, severe developmental spine cracks, severe chest and abdominal wall defects with internal organs, single cavity, and dysplasia of cartilage in the dysplasia.Special explanation: Through the four -dimensional color Doppler ultrasound, pregnant mothers can see various naughty appearances such as yawning, eating fingers, and turning their heads. The baby is like interacting with you.How do you miss the first date with the baby?
Evaluation of fetal development in the third trimester
Small rows of tertiary screening 30-32 weeks of pregnancy
It is mainly to evaluate the development of the fetus, which is a supplementary examination of the B -ultrasound.Monitor the growth and development of the fetus, and check whether the fetus has limited growth, whether the amniotic fluid and umbilical cord are abnormal.
36-40 weeks of prenatal ultrasound pregnancy
Mainly measure fetal biological measurement, understand the speed of fetal production, evaluate the fetal position, fetal size, amniotic fluid amount, placenta position and maturity, or whether the baby has umbilical cord wrapping, umbilical artery blood flow parameters, etc., providing a reference basis for the clinic.Special explanation: fetal positions will also be the focus of prenatal ultrasound B -ultrasound.Near childbirth, the baby should be the head facing the head, the face facing the mother’s spine, and the back of the back.If the fetal position is not right, the doctor will recommend that the pregnant mother adopts the appropriate position and method to help the fetal position change to facilitate the delivery.
Tips1b ultra -examination will affect the development of baby baby?At present, the ultrasound of the clinical clinical, the ultrasound intensity of its probe is very small, and the detection time of each organ is short.Therefore, the ultrasound examination is not harmful to the fetus. It is generally believed that the B -ultrasound examination is a kind of non -invasive examination.2 Ultrasonic "Big Big Far" is done. There is no abnormalities in the report. Does it mean that the fetus is completely healthy?Due to the current limitations of science and technology and individual differences in pregnant women, ultrasonic screening during pregnancy can only be found abnormal in fetal structure of 60%to 70%.40%of fetal chromosomal malformations have no abnormal manifestations of ultrasound and cannot be diagnosed by ultrasound; the acoustic factors of fetal position and abdominal wall of pregnant women also affect the observation of the fetal structure.