Does the number of ultrasounds during pregnancy have any effect on the fetus? Two aspects of protection, pregnant mothers can rest assured

Accompanying a friend to the obstetric check-up, a pregnant mother is talking to the doctor, doctor, I have had an ultrasound for the second time this month, and it has been five or six times before and after. After reading her report, the doctor told her lightly that there is no problem, don't worry, your situation is special, the fetus is not stable, go home and rest in peace.

After the pregnant mother came out, the husband who was waiting in the corridor hurried over to ask how it was. The pregnant mother shook her head, but then complained to her husband that it was still a long time before the due date. I had done so many ultrasounds, and I was worried. Yes, I don't know if the child is affected. The two walked away while talking. For this problem, many pregnant mothers may have been worried. The number of B-ultrasounds during pregnancy is too high. Does it really have no effect on the fetus?

Do B-ultrasound during pregnancy, two aspects to ensure safety factor

The doctor's approach to ensure the safety of the fetus

The reason why many pregnant mothers reject B-ultrasound, including abdominal B-ultrasound and vaginal ultrasound, is mostly due to the fact that B-ultrasound has radiation, which will adversely affect the fetus. Line and CT examinations emit a sound that is inaudible to humans, so there is no ionizing radiation and electromagnetic radiation, and the damage to human tissue is also very small, and the color Doppler used in medicine is low-intensity, obviously low Due to the safety threshold, there is no report of fetal malformation caused by B-ultrasound examination so far, but to say that there is no risk at all, no doctor dares to pat his chest to guarantee, to say that B-ultrasound does have risks, that is, thermal damage. If the ultrasound probe stays in a certain part of the abdomen for more than 5 minutes, it may cause adverse effects on the fetus. Based on this, it is said that B-ultrasound is risky.

But in reality, which doctor would put the B-ultrasound probe on the pregnant mother's stomach for more than 5 minutes? The whole process will not take more than five minutes. Doctors generally use the sliding method. Look here, look there, and make sure to look carefully at every part of the fetus. Therefore, from this point of view, the safety factor of B-ultrasound is Still pretty high.

Couplant increases safety factor

Everyone knows that when doing B-ultrasound, when the doctor holds the probe on the pregnant mother's belly, it does have a certain degree of strength. This is because the fetus is separated from the uterus and the belly. The couplant works at this time. Before doing the B-ultrasound, the doctor will apply a thick layer of glue on the pregnant mother's belly. This is the couplant. Its function is to reduce the friction between the probe and the belly, allowing the doctor to The operation is smoother, and the doctor will not exert vertical force, because the friction coefficient is reduced, and the force is naturally reduced. Secondly, the role of the couplant is to isolate the air, so that there is no air obstruction between the probe and the belly, and the image is clearer , so with the couplant, the inspection time is also reduced, and the friction is also reduced. Does it make the B-ultrasound safer?

How many ultrasounds should I do during pregnancy?

In fact, it is normal for pregnant mothers to have to do 6 B-ultrasounds during the whole pregnancy. Of course, in reality, some pregnant mothers have done more than 6 times, and some pregnant mothers have only done 3-4 times. It doesn't matter how little or not, it's true to follow the doctor's orders. What time are these 6 B-ultrasounds?

First time, 6-8 weeks in the first trimester

This time B-ultrasound is very important for the mother who has just become pregnant. There are several main purposes. 1. Determine the intrauterine pregnancy. If it is an ectopic pregnancy, it is more dangerous. 2 is to confirm the position and size of the gestational sac, so as to calculate the gestational age, but sometimes, the pregnant mother can't remember the time of pregnancy, the examination is too early, and the pregnancy can only be determined, but the fetal heart and fetal bud cannot be seen, so the doctor will instruct , and check again every once in a while, so that the number of B-ultrasounds will be increased invisibly. Basically, 6-8 weeks of pregnancy, the fetal heart and fetal buds can be seen, this time is just right.

The second time, NT color Doppler ultrasound

The NT test is to detect whether the fetus carries abnormal genetic material. The thickness of the zona pellucida cannot be detected until the fetus is 12-14 weeks old. If the risk of this test is high, further tests are required, but there are also many pregnant mothers who miss this time. Check it out, it's better to do it with confidence.

The third time, large row abnormality examination

This color Doppler ultrasound examination is not missed by ordinary pregnant mothers. It is usually performed at 22-24 weeks of pregnancy. At this time, the basic structure of the fetus has been formed, and the amount of amniotic fluid is also very suitable. The fetus is neither large nor small in the uterus. It is conducive to clear imaging. There are many examination items for large row of malformations, including intracranial, heart, abdominal cavity, limbs, etc. There is no problem with this examination, and the risk factor of fetal malformation will be greatly reduced.

Fourth time, 30-32 weeks pregnant

At this point in the second trimester of pregnancy, the purpose of this color Doppler ultrasound examination has two purposes. The first is that it has been a long time since the last examination, the fetus has further developed, and the places that were not clearly seen in the last examination can be confirmed this time. The second is to see whether the fetal development is consistent with the gestational age, and whether the nutrition and weight of the pregnant mother keep up with the rhythm.

Fifth time, 36-37 weeks gestation

In the third trimester, the main purpose is not to see whether the fetus is deformed, but the development of the fetus, the amount of amniotic fluid and the return of cord blood. mode of delivery.

The sixth time, the last B-ultrasound before birth

Usually, a B-ultrasound will be added before the pregnant mother gives birth. This time, it is mainly to further determine the situation of the pregnant mother and the fetus, and to provide important parameter guidance for the delivery.

Of course, the above refers to normal pregnant mothers. If there are some complications, such as gestational diabetes or high blood pressure, or older pregnant women, pregnant mothers with signs of premature birth or habitual abortion, the number of obstetric examinations will increase accordingly. B-ultrasound Of course, the number of times will also increase. There is no need to worry about the number of B-ultrasounds here. The key is to give birth to a healthy baby safely.