Pregnancy B-ultrasound is a must-have examination for every expectant mother. How many B-ultrasounds should an expectant mother need during pregnancy from pregnancy to delivery? How should a B-ultrasound be done during pregnancy and what should be checked? What is the most scientific way to read the pregnancy B-ultrasound report? In this issue, the deputy chief physician of the Imaging Department of the Obstetrics and Gynecology Hospital will give detailed answers to expectant mothers about B-ultrasound during pregnancy, so that you and your baby can be healthy and healthy.
1. What is ultrasound examination during pregnancy?
What are the B-ultrasound examination items during pregnancy?
Q: Hello doctor, what are the items included in the B-ultrasound examination throughout pregnancy? What should you pay attention to when getting the B-ultrasound examination form?
A: Hello, B-ultrasound is a prenatal check-up item. You can start doing B-ultrasound examinations as early as 5 weeks into your pregnancy. At this time, B-ultrasound can be used to observe whether the pregnancy site is normal (excluding ectopic pregnancy) and whether the embryo is viable. After 13 weeks of pregnancy, B-ultrasound can clearly show the fetal head, trunk, heart, lungs, liver, spleen, stomach, kidneys, bladder and other organs and limb bones. For the development of the fetus, it is also necessary to determine the position of the fetus and placenta, evaluate the function of the placenta, and choose the mode of delivery.
Can B-ultrasound detect pregnancy?
Question: My aunt hasn’t been here for 45 days, and I have no reaction at all. I had a reaction 40 days into my pregnancy with my first child. Now I only have mild abdominal pain and vaginal bleeding, accompanied by low back pain. I wonder if you are pregnant again? Can it be found out by doing B-ultrasound?
A: Hello, you need to get checked to know if you are pregnant. B-ultrasound can check it out. You now have abdominal pain and vaginal bleeding. It is recommended that you go to the hospital for examination as soon as possible.
What problems can be detected by B-ultrasound during pregnancy?
Q1: The due date was September 24th. The doctor said the baby was too big, so I randomly chose a day to have a caesarean section. It was necessary to do another B-ultrasound before the caesarean section to decide how to give birth to the baby. Can I decide when to give birth after the B-ultrasound? Is it necessary to do it?
A1: Hello, B-ultrasound examination can show: whether the fetal development is normal, amniotic fluid volume, fetal heart rate, fetal position, weight, umbilical cord blood supply, malformations, etc.! So the choice of delivery needs to be judged based on your B-ultrasound. You can do a B-ultrasound examination, and you will be more confident about giving birth to a baby.
Q2: My belly was quite big when I was pregnant. Since most of my family members are twins, I suspected that I was also pregnant with twins. If they are twins, when can they be diagnosed at the earliest?
A2: Hello, B-ultrasound examination can be done after the fertilized egg implants, which is about 8 weeks.
Can B-ultrasound check whether the fetus is malformed?
Q: I heard that B-ultrasound can check whether there are any abnormalities in the fetus? Then I would like to ask, can three-dimensional B-ultrasound detect cerebral palsy and neurological problems in children?
A: Hello, this is not allowed. Three-dimensional B-ultrasound can only check whether the child\’s internal organs, limbs, and face are deformed!
Q: I am 20 weeks pregnant. I went to the hospital and the doctor suggested that I do a 3D color ultrasound. I read some information online and said it was done around 28 weeks. Is it too early to do a 3D color Doppler ultrasound? Is it possible to detect fetal malformations now?
A: Hello, four-dimensional color ultrasound can be done between 22 and 28 weeks to check whether there are any abnormalities in the fetus. Three-dimensional surgery can also be done after 22 weeks. You are now 20 weeks and you can do it! But the best time to remove abnormalities is 22-28 weeks.
2. How to check B-ultrasound during pregnancy?
Different types of B-ultrasound, which one is better?
Q1: I am now 45 days pregnant. If I want to have a B-ultrasound, should I have a normal black-and-white B-ultrasound or a color B-ultrasound? Which B-ultrasound is better?
A1: Hello, the resolution of color ultrasound is generally higher than that of black and white ultrasound, which means that color ultrasound can see more clearly than black and white ultrasound.
Q2: I am now 7 months pregnant (29 weeks) and want to do a color ultrasound. Is it better to do it in 2D or 3D? What is the approximate cost?
A2: Hello, generally speaking, 3D color ultrasound can provide a more detailed look, especially for abnormalities during pregnancy. 3D color ultrasound is more accurate in ruling out fetal abnormalities. Fees vary by location.
How many times should B-ultrasound examinations be done during pregnancy?
Q1: My wife is pregnant and did not go to the hospital for a B-ultrasound examination. How many times at least do B-ultrasound examinations need to be done throughout pregnancy? What is the appropriate interval between each time?
A1: The first check-up around 13 weeks requires a B-ultrasound examination. A B-ultrasound examination is required at 24-28 weeks of pregnancy, a B-ultrasound review at 32 weeks, and then a B-ultrasound before delivery to determine the baby\’s position.
Q2: I am now over 30 weeks old and have had four B-ultrasounds. How many times? They are every 10 weeks, every 20 weeks, every 26 weeks and every 30 weeks. I guess I need to do it once before I die. It is said that too many B-ultrasound examinations are not good. Am I going too far by doing it four times?
A2: Generally, it is better to do four B-ultrasounds during pregnancy. Some pregnant mothers will have different requirements based on their actual circumstances. At present, B-ultrasound examination is an important means to determine whether the fetus is normal. For the B-ultrasound currently used clinically, the sound intensity emitted by the probe is less than 10mW/c, the detection time for each organ is very short, it does no harm to human tissue, and will not affect the healthy physical development of the baby, so there is no need to worry.
Q3: How long is the most appropriate time for pregnant women to undergo 4D color ultrasound? I had it done at 26 weeks and everything is fine! But my friend said it’s too early, isn’t it? Is it necessary to redo it?
A3: Generally speaking, it is best to do 4D color ultrasound at 22-28 weeks. At this stage, the fetal anatomy has been formed and can be displayed through B-ultrasound. The size of the fetus and amniotic fluid are moderate, they are less affected by bone echo, and the image is clear. Most fetuses are malformed. reflected in this period.
Precautions before B-ultrasound examination during pregnancy
Question: I’m going to have a B-ultrasound in two days. I would like to ask, do I have to fast before doing B-ultrasound? What else should I pay attention to?
A: Fasting is not required for B-ultrasound examination during pregnancy. If it is early pregnancy, try to hold in your urine before doing the B-ultrasound examination. This can clearly show the uterus behind the bladder, shorten the time for B-ultrasound, and is beneficial to the fetus. Generally, as the pregnancy period increases and the fetus develops, in the second and third trimesters, there is no need to hold back urine, which is sufficient to indicate the development of the fetus.
Will B-ultrasound affect fetal development?
Q1: I just went to the hospital for a checkup and found out that I am pregnant. The doctor suggested that I do a B-ultrasound immediately to see if it was an intrauterine or ectopic pregnancy. My mother-in-law is worried that doing B-ultrasound now is not good for the fetus.
, said not to do it now, can I do B-ultrasound in the first trimester?
A1: At present, B-ultrasound examination is an important means to determine whether the fetus is normal. The sound intensity emitted by the B-ultrasound probe currently used in clinical practice is less than 10mW/c㎡, and the sound intensity of each organ is The detection time is very short, does no harm to human tissue, and will not affect the baby\’s physical development. B-ultrasound can be done after 40 days in the first trimester. The purpose of a B-ultrasound examination in the first trimester (6-12 weeks of pregnancy) is to confirm pregnancy, clarify the position, size, and survival of the fetus, rule out ectopic pregnancy, determine gestational age, and predict the expected date of delivery. wait.
Q2: I had a four-dimensional color ultrasound when I was 20 weeks pregnant. Later, I heard from some friends that color ultrasound would be bad for the fetus. Does four-dimensional color ultrasound really have an impact on baby development? How many times can I take photos?
A2: Four-dimensional color ultrasound adopts engineering design principles and does not contain any radiation, light waves, electromagnetic waves, etc., so expectant mothers do not have to worry about the impact of four-dimensional color ultrasound examination on the health of themselves and their fetuses. Between the 22nd and 28th weeks of pregnancy, it is enough to do a four-dimensional color ultrasound to confirm that the fetus has no malformations. There is no need to do it many times.
Four-dimensional color ultrasound can observe the growth and development of the fetus in the mother-to-be’s abdomen from multiple directions and angles, providing a more accurate basis for early diagnosis of fetal congenital surface malformations and other diseases. For example, cleft lip, spina bifida, brain, kidney, heart, skeletal dysplasia and other abnormalities can be detected in time, so that early treatment can be carried out to increase the chance of eugenics.
3. How to read the pregnancy B-ultrasound report?
B-ultrasound standard values
Q: I had my first B-ultrasound examination at 28 weeks of pregnancy. The result was that the fetal head was suprapubic, the biparietal diameter was 7.3cm, and the FL was 5.1cm. The placenta is attached to the front wall of the uterus, the maturity level is 0, the amniotic fluid is moderate and the sound transparency is good, the fetal heart rate is 146 beats/min, the spine is arranged continuously, and the fetal heart beats regularly. What does the above result mean? What does biparietal diameter mean? What is fl? What are the standard fetal data at 28 weeks of pregnancy?
A: 1. The above results indicate that the fetus is developing normally.
2. Biparietal diameter: the smallest diameter between the left and right sides of the fetal head.The length of the wide part is also called the \”large transverse diameter of the head\”. Doctors often use it to observe the child\’s development, determine whether there is cephalopelvic disproportion, and ensure a smooth delivery.
3. fl=femur length, femur length: the length of the fetus’s thigh bone. Its normal value differs from the biparietal diameter value of the corresponding pregnancy month by about 2-3 cm. For example, the biparietal diameter is 8.6 cm, the femur length should be 6.6 cm.
4. Normal fetal B-ultrasound value at 28 weeks of pregnancy:
(1) Biparietal diameter: 7.24±0.67cm; (2) Femoral length: 5.35±0.55cm; (3 )Amniotic fluid depth: 3-8cm; (4) Fetal heart rate: 120-160 beats/min.
B-ultrasound data to determine fetal size
Q1: I had a four-dimensional color Doppler ultrasound at 27w+3, and the report showed that I was 29 weeks pregnant. The biparietal diameter of the fetus is 7.73, the abdominal circumference is 25.5, and the femur is 5.41. The baby\’s face is not visible because the umbilical cord and hands cover the face. The amniotic fluid volume shows normal, the fetal heart rate is 160, and the placenta is grade 1. Is the fetus a little too big, and is the fetal heart rate a little too fast?
A1: You don’t have to worry, your baby’s fetal heart rate is normal. But if it exceeds 160, you should pay attention to whether the baby is hypoxic.
Q2: I had a B-ultrasound on the last day of my 32nd week of pregnancy. The biparietal diameter of the fetus was 7.9cm, the femur was 5.7cm, and the dark area of amniotic fluid was 4.0cm. Experts, is the BB too small? Is the amniotic fluid low? In addition, my bile acid level is high, will it also affect the development of the fetus?
A2: The baby is too small, but don’t worry too much. Amniotic fluid can be adjusted by drinking more water. As for whether the shadow will affect the baby, it depends on the individual\’s constitution.
Q3: At 25 weeks of pregnancy, the B-ultrasound showed that the fetus was 2 weeks too small, that is, the uterine height was not long, only 21, and everything else was normal. Could this indicate anything wrong with the fetus?
A3: You don’t have to worry. If the baby is normal in all aspects, you can rest assured. It’s just that the fetus is smaller, so you can eat more.
B-ultrasound data to see the delivery situation
Q1: The B-ultrasound done at 40 weeks, the B-ultrasound sheet showed 94mm, HC: 314, FL: 69mm, like me Is it possible to give an injection to induce labor? Does induction of labor have any impact on mother and baby?
A1: There will be a difference of one to two weeks between the actual date of delivery and the expected date of delivery. Whether to use an oxytocin injection is not arbitrarily requested by the mother or her family. It requires careful evaluation by the obstetrician before deciding. Induction of labor has little effect on the baby and mother, but improper use of the medication may cause uterine rupture, so it must be performed in a regular hospital.
Q2: I went for a B-ultrasound today. The doctor said that the fetus is actually 12 weeks pregnant. Biparietal diameter: 1.9cm, crown-rump length 5.4cm, fetal heart rate 157 beats/min, placenta thickness: 0.8cm, amniotic fluid depth: 2.9cm. I would like to ask, what is the problem with the depth of my placenta and amniotic fluid?Question? Is the amniotic fluid not enough? Should I recuperate at home or go to the hospital?
A2: The thickness of your placenta is within the normal range, but the amniotic fluid is low. But you don’t have to worry, you can just recuperate at home, drink plenty of water, and pay attention to timely prenatal check-ups!
Q3: I am 41 weeks today. The B-ultrasound done on April 10th showed that the placenta was grade 3 and the amniotic fluid volume was 127mm. Can I wait another week? Why?
A3: Generally speaking, it is normal to give birth 2 weeks before or after the expected date of delivery. In this case, you need to see what your prenatal doctor says. He has a more detailed understanding of your situation. If all the test indicators are normal, your prenatal doctor says you can wait another week. At the same time, pay close attention to the baby\’s dynamics and pay attention to fetal movements.
There is a V-shaped mark on the B-ultrasound report
Q: My due date is March 10 this year. When I went to the hospital for a check-up, I saw on the B-ultrasound report: There is a V-shaped mark. After asking the doctor, I found out that it means that the baby\’s umbilical cord wraps around the neck. I heard that it is life-threatening for a fetus to wrap around its neck. Why did the doctor have no reaction after reading the list? He only told me to pay attention to fetal movements every day. What\’s going on?
A: The umbilical cord wrapping around the neck is a common obstetric complication. Most umbilical cord wrapping around the neck will not cause great harm to the fetus during pregnancy because the umbilical cord itself has compensatory stretching and will not be tightened to a certain level. To a certain extent, no clinical symptoms will occur, so the harm to the fetus is not great, so there is no need to worry too much.
The umbilical cord wrapping around the neck is related to many factors such as the length of the umbilical cord itself, the number and degree of loops around the neck, etc. The risk needs to be determined by the doctor based on the specific circumstances during the examination. Not all umbilical cord wrapping around the neck will cause Life-threatening.
If the doctor says there is no problem, don’t worry too much. Follow the doctor’s instructions, monitor fetal movements and conduct prenatal check-ups on time. If the fetal movements suddenly become particularly frequent or the fetal movements decrease significantly (less than 15 fetal movements in 12 hours, or 50% less than before), or even not moving, you should go to the hospital in time.