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Harm to ultrasound during pregnancy

“The delay is two weeks ... a positive pregnancy test, I am pregnant, I have to go to the doctor, I need to do an ultrasound ... and suddenly an ultrasound scan in my important position is harmful ... all of a sudden it is dangerous, and any gynecologist will first send an ultrasound ... what to do. “- familiar thoughts for most mummies. Is ultrasound harmful to the fetus during pregnancy?How often it is recommended to do this research, what you need to know about ultrasound and the possible harm to the baby? Let's try to figure out, sort through everything that is so important to know about the so-called ultrasound.

What is ultrasound and how it can harm a pregnant woman and a child

Ultrasound is a non-invasive (that is, not requiring intervention into the body) study using ultrasound waves.

Ultrasound is the usual sound, the same as music, the sound of the sea, the conversation, but this sound is so high that a person’s ear is not able to perceive it, its oscillation frequency is too large. Any sound penetrating through obstacles is reflected from them. Remember what will happen if you scream in the mountains, in the forest - your voice will echo. The same thing happens with ultrasound. During ultrasound, it penetrates the tissue and is reflected on the sensor, the computer processes this sound and displays it on the screen as a picture.

During the penetration of ultrasound through the tissues of the cells of the body a little heat. Particularly susceptible to heating cells, which contain a lot of water. In the embryo, which itself is very small, the most "water" part is the brain, it is he who is exposed to ultrasound most of all. How this affects the further development of the fetus, whether this effect leads to any harmful consequences, the occurrence of malformations, at the present time there is no accurate evidence. A lot of research is currently being conducted on this subject, both abroad and with us.

But believe me, if someone had already unequivocally proved that Ultrasound during pregnancy is harmful, we would all know about it, as we know about the dangers of X-rays.

Ultrasound harm during pregnancy and fetal age

It is known that for a pregnant woman ultrasound does not cause any harm, as for the embryo - the older it is, the less the negative effect of ultrasound on it. As you know, in the early stages of pregnancy absolutely everything, everything that happens to his mother affects the embryo. That is why in the first trimester of pregnancy should minimize the negative effects on the child. However, this is not always possible, often many factors cannot be controlled (any illness, acute or chronic, our environment, stress in transport, etc.).

In what cases it is necessary to carry out ultrasound during pregnancy

According to modern data, there are much more facts that speak not about the harm of ultrasound, but about the need to conduct this study.

So, in the first trimester, according to foreign data, it is recommended to do the first ultrasound scan in the gestation period of 11-12 weeks (except for those situations when an ultrasound scan is urgently needed - pain, bleeding). To determine the presence of pregnancy, doctors in foreign countries use the measurement of the quantitative content of chorionic gonadotropin in the urine (blood), and do not carry out an ultrasound study in the first weeks of pregnancy. Thus, they protect the future baby from the unknown until the end of the harm of ultrasound. (Chorionic gonadotropin is a hormone that is produced during pregnancy, it begins to appear from the first weeks of pregnancy and its number increases by 7–11 weeks.)

Should I do an ultrasound in early pregnancy?

In our post-Soviet countries, women are sent to an ultrasound at the first visit to the antenatal clinic in order to:

• confirm pregnancy

• to determine the exact duration of pregnancy

• determine the position of the ovum

Today is Thursday, April 30, 2015. Information: The article is protected by copyright and related rights. When using and reprinting the material an active link to the site is required! Myths and truth about the dangers of ultrasound during pregnancy

The question - how harmful is ultrasound during pregnancy - worries many future moms, so we decided to debunk the popular myths about the dangers of frequent ultrasound during pregnancy.

According to the results of Swedish research groups of 7 thousand men who underwent ultrasound during intrauterine development, slight deviations in brain development were observed.

At the same time, the problem is not negative changes, but significant prevalence of left-handedness among the past ultrasound in the prenatal period. Of course, this does not prove a direct consequence of “ultrasound-left-handedness”, but ssets to think about the effect of ultrasound on pregnancy.

To say that ultrasound is harmful during pregnancy, definitely not:

  • First, there is no purity of the experiment., because every pregnant woman goes through many different studies that can also have a potential impact on the development of the fetus. In this case, the proof of the harm of ultrasound during pregnancy should not be statistics, but an experiment. It must confirm the negative effect of ultrasonic waves on the brain of a developing fetus.
  • Secondly, time is neededduring which it will be possible to judge the possible consequences of the very devices on which ultrasounds are now being conducted. Just as drugs are tested, they are not released to the market until their safety is confirmed for 7-10 years. In addition, it is wrong to compare modern technology for ultrasound with old equipment from the 70s.
  • Well, and thirdly, all drugs or tests can be useful or harmful - the only question is in quantity. So in our country it is considered a healthy norm - 3 ultrasounds for pregnancy. The first - at 12-14 weeks to identify malformations, the second - at 23-25 ​​weeks, the third - before childbirth to assess the state of the placenta and water volume.

Myth number 1: Ultrasound is very bad for prenatal development

There is no denial or evidence of this.. Moreover, conducting research on the old devices of the 70s, experts did not reveal a harmful effect on the embryo.

The answer of the specialist of gynecology and ultrasound D. Zherdev:Do not perform frequent ultrasounds. However, if there is a threat of miscarriage, then, of course, it is necessary to go to the ultrasound. If there are no such indications, then 3 planned ultrasounds will suffice. "Just so" research should not be done, especially in the first trimester. After all, ultrasound is a wave that repels from the organs of the embryo, forming for us a picture on the monitor. I do not have complete confidence in the absolute neutrality of ultrasound. As for the late dates, in which many parents take 3-D images for memory, the possible effect of ultrasound on the development of the fetus is unlikely. At such a time, the embryo systems are already formed.

MYTH number 2: UZ changes DNA

According to this version, ultrasound acts on the genome, causing mutations. The founder of the theory claims that ultrasound causes not only mechanical vibrations, but also deformation of DNA fields. And this causes a failure in the inheritance program, because a distorted field forms an unhealthy organism.

Studies on pregnant mice have completely refuted Gariaev’s statement. No pathologies were observed even with a 30 minute ultrasound.

The answer of the obstetrician-gynecologist L. Siruk: Ultrasound provokes mechanical oscillation of tissues, leading to heat and the formation of gas bubbles, the gap which can damage the cells. But this equipment reduces these effects by several times, so the harm of ultrasound for a healthy pregnancy is unlikely. I do not advise only to do ultrasound during pregnancy early on, because during this period the embryo is most susceptible to ultrasonic waves.

Myth number 3: The child is bad from ultrasound

Yes, some kids are very "loud" respond to ultrasound. Opponents of this study believe that in this way kids are protected from the dangerous effects of ultrasound.

At the same time, supporters of the ultrasound believe that This behavior is associated with the touch of the sensor and the excited state of the future mom.

The answer of the obstetrician-gynecologist E. Smyslova: "Such spontaneous contractions and hypertonus can be caused by various factors: ultrasound, or emotions, or an overflowing bladder."

Myth number 5: ultrasound do for statistics

There is some truth in this, because screenings provide tremendous information for medicine, genetics and anatomy. In addition, in some cases, the doctor may make mistakes or not see some abnormalities of the fetus. In this case, Ultrasound helps to avoid many problems and even save a woman’s life.

Thus, we can only recall voluntary ultrasound in our country. Make sure your doctor uses modern technology with low levels of radiation.

Successful childbirth!

Posted on April 1, 2014 in the category: Pregnancy


I sometimes wonder too, well, what is it for? I went to hospitals three times a week for pregnancy. That analyzes, then experts, then ultrasound. What then will be bad and can not figure it out. 4 times for pregnancy ultrasound, well, is it not too much, why risk once again ... In addition, it does not give any guarantee. I did the last two days before giving birth. Was a doctor, shortly research took place. And she gave birth quite unexpectedly, a premature baby, a patient. This no one could predict and identify. And to sense ...

My daughter on ultrasound began to push hard, and my son turned away and froze. I concluded that they feel it, but I don’t know if I like it or cause discomfort. I went to the ultrasound only at the screening time and to make sure that everything is in order.

And when I just got pregnant, or rather, I felt that I had a delay and did a test, I went to a gynecologist (or rather, even to the head!). She said that judging by the uterus, pregnancy is possible, well, plus the test result, a delay. But she says: "To make sure, you have to do an ultrasound." I say: "And now you can?". She: "You can," and gave direction. I only had 4-5 weeks of pregnancy! Why send me to the ultrasound if the gynecologist knows perfectly well that it is harmful? Uzi, by the way, was paid. Now I understand why. I, stupid, did not know that it was harmful to do it in the early stages. Well, then I made 3 more planned ultrasound. As a result, the girl, of course, was born healthy, but the weight was 2900 (not very much), and besides, at about 10 days of life, our eyes began to sour, and there was a tear. As a result, neither drops nor massages helped, and it was necessary to do the sensing (it was already at 5 months) of the tear channel. Why am I leading all this? And the fact that it so happened that my mother and I decided to lead the little girl to the “grandmother” (well, fortuneteller), and she said that this child had dacryocystitis (eye problem) because the ultrasound beam got on eye I do not know whether to believe in it or not, but if I get pregnant again, I will not immediately run to do an ultrasound! To begin with, there is enough test, delay, and what the gynecologist will determine in the chair. But, on the other hand, if the period is still such that the child does not move yet, and you, for example, have bleeding or some other symptom of threatening miscarriage, then ultrasound helps to determine if everything is in order, is there a fetal heartbeat. So there is a double opinion. But for myself, I learned a lesson: do not do ultrasound just like that.

I did more than 3 ultrasounds. It so happened that since I woke up and did not feel that my tiny baby was moving in the tummy. I waited, waited, when she would wake up and without waiting for her at about 10 o'clock she went to the clinic and asked me to do an ultrasound to check that with my child. When she waited, she woke up when she was pressed a little. Then on the monitor I saw the baby sucking his thumb on the handle. It was touching, and I calmed down. So 4 studies I passed.

Is ultrasound harmful during pregnancy?

Every woman knows that pregnancy is a time when you need to especially carefully monitor your health and general condition of the body. The simplest and most reliable method for diagnosing the state of a mother and child is ultrasound examination.

Most expectant mothers undergo ultrasound at least three times during the entire period of carrying a child. But there are violent opponents of diagnosis, who believe that ultrasound is harmful during pregnancy. Experts, in turn, argue that ultrasound is an absolutely safe test, ignoring of which can have extremely negative consequences.

When you need to do an ultrasound

Despite the fact that the ultrasound examination is considered to be completely safe, it should be carried out only on doctor's prescription. Experts strongly recommend pregnant women not to listen to those who say that ultrasound is harmful during pregnancy. Ultrasound within reasonable limits is absolutely safe and can do no harm.

During the examination, the attending physician will be able to examine the uterus, the state of the placenta, the umbilical cord, as well as assess the overall development of the child. If pathologies or abnormalities in the work of certain organs are revealed, the woman will be referred for additional consultation to solve the problem.

The most optimal and safe timeframes for ultrasound are:

  • 10-14 weeks of pregnancy. The first ultrasound is often performed to determine as precisely as possible how much time has passed since the fertilization of the egg. The doctor also carefully examines the condition of the fetus, monitors its heartbeat. Despite the fact that many women believe that ultrasound is harmful during pregnancy, it should be done immediately after receiving a referral from a doctor,
  • 20-24 weeks of pregnancy. Very often, the second ultrasound is the most memorable for future parents. This is due to the fact that during the procedure you can not only see the child, but also find out his gender. During the second examination, the doctor assesses the condition of the woman’s internal organs, the placenta, the position of the fetus, and the amount of amniotic fluid. Comparing the results of the first and second diagnostics, a specialist can make a conclusion about how the pregnancy goes,
  • 30-34 weeks of pregnancy. The last ultrasound is performed to find out the exact position of the fetus before delivery. By this time, the baby becomes large enough, therefore, occupies the most convenient position inside the uterus. If the child is in an unfavorable position or has a weight greater than 4 kg, the doctor may prescribe an atypical type of delivery.

Do not forget that the doctor in addition to the planned procedures can send for additional ultrasound at any time. Often, the first examination is carried out a few weeks after the delay so that you can determine the type of pregnancy and its timing. Talk about the dangers of ultrasound during pregnancy have no scientific evidence. Therefore, each expectant mother can safely attend the designated procedure.

Ultrasound during pregnancy: the benefits or harm

Harm ultrasound during pregnancy can be or is it all myths? This question worries all expectant mothers. After all, it is known that any medical intervention, medication may have a bad effect on a very tiny child. But despite this, all women, without exception, in women’s maternity clinics are given directions for ultrasound, at least 3 times during pregnancy. About the harm to the fetus for the fetus is often told in the media. Who to believe - the media, the Internet and girlfriends, or still doctors and the results of scientific research?

Over the past 20 years, a lot of scientific research has been conducted in order to understand whether it is harmful to make ultrasound during pregnancy or not. Researches were conducted by scientists from different countries and continents. And they all concluded that ultrasound in moderate amounts is absolutely safe for the child and does not lead to cancer and neuropsychiatric disorders.

There are 2 more concerns. The first is that the sensor increases the temperature at the point of contact with the skin. However, these touches last only a few seconds, the temperature rise is local and very short-lived. By the way, with ultrasound ultrasound exposure is usually limited to 2-4 minutes. The rest of the time, the doctor is engaged in measuring various parameters on the screen and searching for pathology in an image already received.

The second concern is that the effect of the sensor on the cervix may trigger its opening. It is unlikely that this can really be. However, expectant mothers, in order to avoid even the slightest of such a risk, abdominal ultrasound - that is, through the abdominal wall.

And what damage to ultrasound during pregnancy can be in the case of holding it in such a popular 3D format now? There is no difference in risk. The advantage of this type of ultrasound is the possibility of obtaining a photorealistic image of the fetus. This may be important, for example, in case of suspected genetic pathology. But more often it is done simply at the request of parents who want to “get acquainted” with their baby as quickly as possible. Most doctors are against such experiments. Let the harm of ultrasound in early pregnancy and late is not proven, but ultrasound remains a medical procedure. And they should be carried out only according to indications, but not at will.

In Russia, it is customary to make pregnant 3 ultrasound examinations. Но их может быть и больше в случае подозрения на патологии. К примеру, дополнительное УЗИ может быть назначено в первом триместре при подозрении на гибель эмбриона или внематочную беременность.In the second trimester, if cervical failure is suspected. And in the third trimester for additional measurements of the fetus (if there are concerns about its developmental delay - malnutrition), studying the blood flow in the umbilical cord and placenta, with a large fetus (to resolve the issue regarding the mode of delivery), to estimate the amount of amniotic fluid, etc.

All these reasons are compelling. With timely detection of pathology there are great chances for prolonging pregnancy and the birth of a healthy child.

Harm ultrasound during pregnancy, what should know mom?

Harm ultrasound during pregnancy, what should know mom? There is hardly a woman who during her pregnancy would not go on an ultrasound. This procedure is considered not only the norm, but also a necessity. A woman who is seen in the antenatal clinic must undergo an ultrasound examination at least once during the entire pregnancy, without thinking about the possible harm to the future baby. This method has a lot of opponents, because the harm of ultrasound during pregnancy is applied to the emerging life is not fully understood.

One thing is clear, ultrasonic waves are sent to the internal organs of the mother and fetus. They pass through the skin of the mother, tissues and organs, and are reflected from the body of the child. The sensor, which sends these waves, takes them back and sends them to the analyzing part of the apparatus. It is the influence of ultrasound waves in the presence of pregnancy that causes harm to an unborn child. Scientists in many countries come to the conclusion that ultrasound during pregnancy, especially in the early stages, causes harm to the fetus. At a time when all the major organs and tissues are being laid down, an unwanted external intervention occurs on the ultrasound. Powerful ultrasound waves can cause uterine tone, and there is a negative effect on the nerve cells of the embryo. Often on the embryonic photo you can see how the child tries to close his hands, turn away from the harmful radiation.

Scientists from the United States analyzed the harm caused by ultrasound for the fetus and during pregnancy. As a result, the National Institute of Health of the United States does not recommend to do an ultrasound scan for all pregnant women, only if there are significant reasons.

Opinions of different scientists agreed on one conclusion: the degree of harm depends on the duration of the ultrasound session. Therefore, new types of ultrasound, such as 3D or 4D, receive even more outspoken criticism.

Many parents, not thinking about the harm that 3D ultrasound will cause during pregnancy, are ready to pay a round sum to see the features of their unborn child. Often they are driven by simple curiosity, and in fact the time required for such a study is more than with conventional gynecological ultrasound. In addition, to make the frame better, doctors increase the radiation power. If parents knew about the harm they cause to their future baby, they would have thought a hundred times before going on an ultrasound during pregnancy.

Swedish scientists went further in their research. They examined 600 pregnant women with an ultrasound scan, and then the same women were consulted by obstetricians. It was found that the deviation in the development of the fetus from the norm, obstetricians determine accurately. To find out the main parameters in the development of the fetus does not necessarily resort to ultrasound. Harm during pregnancy from ultrasound, which receives the embryo, can be justified only by serious diseases and genetic characteristics of the parents.

The benefits of carrying

Of course, one should not underestimate the possibilities offered by the use of this method in modern gynecology. Timely diagnosis of many pathologies that occur during pregnancy helps save thousands of new lives around the world. Without ultrasound, in many cases it is simply impossible to do.

This study helps determine the presence of the ovum. This criterion is the earliest manifestation of pregnancy. A gestational (fetal) egg is revealed already in the first weeks after conception. To determine it, only the most modern devices are used, which have a fairly high resolution.

Ultrasound helps to establish signs of the viability of the embryo at the earliest stages of its intrauterine development. Using this method perfectly detected "frozen" or "frozen" pregnancy. In this case, as a rule, further development of the fetus is impossible and urgent gynecological surgery is required.

With the help of this study, you can establish the expected duration of pregnancy. If the future mom bears several babies at the same time, then the use of ultrasound in this case is practically indispensable. This study is especially necessary if the pregnancy occurred after in vitro fertilization. In this case, ultrasound helps to assess the viability of each of the implanted embryos, as well as monitor their development and growth.

With the help of ultrasound, it is possible to determine various genetic and chromosomal abnormalities. These diseases can occur in the fetus at different periods of its prenatal development. At later stages, ultrasound diagnosis helps to identify anatomical defects in the placenta, as well as to identify signs of low water.

For so many years, obstetricians have determined the position of the fetus in the uterus only with their own hands. Quite often they were wrong. This led to the fact that during childbirth doctors resorted to the wrong gynecological techniques. In the end, all this contributed to the severe birth injuries of the babies.

Currently, it is possible to determine the position of the future baby in the uterus using ultrasound. Such a study, conducted before birth, helps doctors decide on the best tactics for future obstetrics.

Is it harmful to the fetus?

There is no denying that frequent ultrasound may harm the health of the unborn child. In the scientific world there is a huge amount of various studies proving this statement. Scientists from Ireland argue that the abuse of ultrasound at the stage of gestation may lead in the future to the development of various tumors. True, they made this conclusion on the example of laboratory mice.

The harm of ultrasound in the early stages of pregnancy may be more likely. At this time there is a very important process in the body of the future baby - organogenesis. All the internal organs and systems begin to form in the fetus. Any physical effects during this period have undesirable effects on this process. In this case, frequent ultrasound has a negative effect on fetal development.

A negative effect may also be associated with a certain temperature effect. This effect is possible during the contact of the ultrasonic sensor with various organs. The longer the study is conducted, the more pronounced the effects after it.

Scientists note that while pointing the ultrasound sensor to a specific anatomical zone, its temperature rises by several degrees. Under the influence of ultrasound in the cells of internal organs also increases the permeability of cytoplasmic membranes. The composition of the ions that participate in their structure also varies. This leads to the fact that cell membranes become more permeable for penetration into the cells of various substances.

Ultrasound diagnostics specialists also note that during such studies in different cells of the body, even the rate of various enzymatic processes may change. Prolonged exposure to ultrasound in this case may trigger the formation of various deviations.

Especially unfavorable in this case is the performance of a study on the term of intrauterine development of 5-6 weeks, when there is an active laying of all the internal organs of the unborn child.

European scientists note that the use of ultrasound may even lead to conditions associated with impaired cellular respiration and metabolism. Some experts believe that it is these disorders that further lead to the possible formation of various chromosomal abnormalities in the fetus. However, it should be noted that all assumptions are only scientific theories and are not recognized by the entire medical world.

According to most experts, the most It is dangerous to conduct ultrasound using focused ultrasound. In this case, the impact on a specific area of ​​the skin becomes the most pronounced. If the treatment is carried out for a long time, it can even lead to significant violations.

For many years, scientists have tried to identify the internal organs that are most vulnerable to the effects of ultrasonic waves. They concluded that the anatomical structures with a fairly good blood supply and innervation are most susceptible to this effect. The brain is also among the most vulnerable organs. The impact of ultrasound waves on this organ can damage it.

Some scientists believe that the frequent use of ultrasound leads to a significant increase in the number of left-handed children in recent years. They also believe that this is a consequence of the direct effect of ultrasonic waves on actively growing brain cells - neurons. Experts believe that such children in the future may experience various difficulties with schooling or, conversely, develop some ingenious abilities.

American experts note that the incidence of autism is increasing in their country every year. They suggest that there is a pattern between frequent vaginal ultrasound and the appearance of various neurological and mental disorders in the future children.

The first signs of autism, as a rule, appear already in preschool children. In the appearance of adverse symptoms, a disturbance of the coordinated work of the cerebral hemispheres cortex has an enormous effect. Such babies have various behavioral disorders and speech changes. Some American scientists believe that the appearance of such deviations in babies is influenced by frequent ultrasound during pregnancy, but they have not yet conducted any serious studies.

Some researchers believe that conducting an ultrasound at an early stage can even lead to a miscarriage. This theory has no scientific evidence. All the results were also carried out on laboratory animals. Some studies have found that performing An ultrasound scan at gestational age from 9 to 11 weeks can cause the mother to reject the fetus. The probability of such a situation, as a rule, is 20-25%.

Another theory implies that the abuse of ultrasound during pregnancy can lead to an increase in the birth of babies who have any further tumors of the blood and blood-forming organs. To prove this, supporters of this scientific hypothesis give statistics on the incidence of leukemia in children. The incidence of blood neoplasms in children in recent decades has indeed increased significantly.

Debunk Myths

It is important to note that not only ultrasound conducted during pregnancy can lead to heat exposure. Ultrasound of the kidneys or heart also has a pronounced effect on the woman's body. However, the effect of ultrasound during pregnancy causes the greatest excitement in future moms.

Many of the scientific assumptions are myths, since they have no real evidence.

Most of them are made only on laboratory animals. In this case, it is impossible to talk about a clear correlation with the child population. Many theories exist in medicine for quite a long time, but have not been confirmed.

Opinions of parents on the conduct of ultrasound are also significantly different.

The benefits of ultrasound in the first weeks of carrying a child

Immediately it is necessary to clarify that ultrasound is simply indispensable in identifying abnormalities in the development of the embryo. The sooner the pathology is found, the more chances the doctors have for correcting the situation. In cases where the future mother began to bleed or severe pains in the lower abdomen, you will not be able to do ultrasound, because the treatment "blindly" can only aggravate the situation.

In addition, with the help of this diagnostic method, it is possible to determine with great precision the duration of pregnancy, or it can be found out that there is no pregnancy, and the delay was caused by a gynecological disease. Moreover, without ultrasound it is impossible to establish the sex of the unborn child.

The harm of ultrasound in the first weeks of carrying a child

It would seem that the arguments in favor of an ultrasound are so convincing that this procedure at the time of appointment to all future moms without exception. However, the reality is not so simple.

First of all, foreign experts pay attention to the fact that ultrasound examination at 2–4 weeks of gestation is ineffective, since it carries minimal information. The vaginal sensor, through which the procedure is carried out, can examine the fetus with a minimum size of 1-2 mm, and therefore, no earlier than 5 weeks after conception. That is why in the first weeks only a blood test is used to confirm pregnancy. In addition, by determining the level of hCG (human chorionic gonadotropin), experts can calculate the age of the embryo.

Identify ectopic pregnancy with the help of ultrasound diagnostics is also impossible. The fact is that the fetus begins to attach to the wall of the uterus only in the fourth week of pregnancy, before being in a “suspended” state. Practice shows that even at the fifth week of pregnancy, the results of ultrasound also do not always reliably say, uterine pregnancy in a woman or ectopic. According to foreign doctors, it is possible that it is ultrasound that prevents the fetus from attaching.

Indeed, the safety of ultrasound in early pregnancy has not yet been proven. There are no studies on this topic, both because of their high cost and due to the fact that when studying the effect of ultrasound, only born children are taken into account. It cannot be ruled out that ultrasound, pushing away from the walls of internal organs, and therefore exerting pressure on them and heating them, can seriously harm a tiny embryo.

Should I undergo an ultrasound in early pregnancy?

Making a conclusion from the above, it can be argued that if the purpose of this type of diagnosis is only to determine the exact day of conception, it is better to abandon the ultrasound. It is necessary to undergo examination only under strict medical indications. Without the fear of going to the first ultrasound is the sixth week of pregnancy. Take care of yourself and your children!

Is ultrasound harmful to the fetus in early pregnancy?

Forums of young and future mothers are full of horror stories about ultrasound. “I went to the ultrasound and gave birth to a premature baby!”, “I don’t know what to believe, but“ grandma ”said that her daughter’s eye is festering because she did an ultrasound - it’s terrible, but familiar. In order to objectively assess the merits and possible dangers of ultrasound research for a child, find out how everything works.

Operating principle

Understanding the features of research from and to - the task of specialists. It is much more important for us to understand the general principle of the process.

In the study of the fetus, a special sensor directs to the place of its location an ultrasonic wave with a frequency of 3.5 MHz. Reflected from obstacles in their path - amniotic fluid, bones and tissues - the directional sound vibrations change the frequency. Reflected waves of different frequencies are read by the ultrasonic sensor receiver and visualized as a picture on the monitor, which the operator decrypts.

Early gestational age

The first trimester is the most important and difficult stage in the development of a baby. In the first weeks, any third-party effects on the fetus - stress, alcohol use or even ultrasound - should be minimized to the maximum in order to avoid the risk of miscarriage and malformations. The harm of ultrasound in early pregnancy is not clinically confirmed, but it is not refuted. Experts recommend to abandon the procedure from 1 to 13 weeks. During this period, proper nutrition and emotional comfort is more important than diagnosis.

Exposure time

In order not to overheat the amniotic fluid, standard ultrasound during pregnancy is done for no more than 20-25 minutes. A short-term increase in temperature is not dangerous when the pregnancy is healthy, but it is better not to experiment.

“Everything is poison, everything is medicine”

Both determine the dose. Paracelsus formula is relevant even for ultrasound diagnostics - no specialist will advise ultrasound during pregnancy every 2-3 weeks. It is not so much the potential harm of the procedure, but rather the inexpediency of its frequent repetitions. Малыш развивается поступательно, и наблюдать за ним постоянно не стоит, особенно через УЗИ на ранних сроках беременности. Исключения могут составить случаи аномалий с риском для плода.

Здоровым маме и малышу 3-4 ультразвуковых исследований окажется вполне достаточно.

УЗИ вызывает мутации

Один из самых блистательных домыслов на тему. Since the mid-nineties, the idea of ​​the relationship between ultrasound and mutations has been promoted by Peter Garyaev, the creator of the pseudoscientific theory of the Wave Genome. According to his concept, sound waves can affect the DNA structure directly, causing multiple modifications and abnormalities, especially with ultrasound in early pregnancy.

During the experiments on mice, the concept of Garyaev was naturally refuted - the structure of the genome is sufficiently stable not to change under the influence of sound vibrations.

If you decide to agree with the thesis that ultrasound is harmful during pregnancy and causes genetic abnormalities, you advice - do not talk to the baby. Suddenly your voice (sound waves, like ultrasound) will cause the fetus to mutate?

Is the fetus afraid of ultrasound?

Many mothers thought that ultrasound during pregnancy was harmful, looking at the third procedure, the baby carefully hid from the diagnostician and behaved restlessly. Some babies actually hide in the study in the last trimester of pregnancy, but is ultrasound harmful to the fetus?

The researchers found that most often the baby is looking for a safe place, feeling the pressure on the stomach. Another reason for “playing hide and seek” is the sound nature of ultrasonic waves. For those who are outside, they are outside the sound threshold, but in the amniotic fluid the frequency of the wave decreases. The baby hears an unusual sound and reacts to it. Not always hiding at the same time - some (often boys) on the contrary love to “show off” in front of a diagnostician.

The big child is also hampered by the mother's full bladder, but these are the rules for the procedure.

Ultrasound diagnosis negatively affects perinatal development.

Is ultrasound dangerous for intrauterine development of the baby? The largest clinical study on this topic was conducted in Sweden in 2001. Experts noted a correlation between left-handedness and ultrasound procedures - most of the boys who underwent intrauterine research were left-handed. The results of the study were later criticized - the percentage of left-handed people around the world is growing, regardless of prenatal ultrasound diagnostics.

Why is this necessary?

Whether ultrasound is harmful during pregnancy is up to you, but ultrasound diagnostics under the supervision of an experienced specialist is necessary. This is not just a pleasant opportunity to look at the baby, to imprint on memory or to find out the floor. Ultrasound during pregnancy is a strictly regulated medical procedure. Each of the studies carried out at the right stage is not accidental.

First screening

Spend from 12 to 14 week, but not before. In the course of ultrasound in the early stages, doctors identify possible pathologies of the fetal neural tube, the size of the abdomen, head, heart and blood vessels. The fertility of pregnancy and the time of fertilization also become known at the first screening. Gender with ultrasound in the early stages will not work.

It is vitally important to undergo the procedure for pregnant women, for pregnant women over 35 years old, the risks of developing pathologies can be increased.

Second screening

Held from 20 to 24 week. With a healthy pregnancy, a second screening may not be prescribed. But the majority of moms and dads are waiting for him with impatience - in the course of the second diagnosis, the baby’s sex is revealed.

The doctor pays special attention to the face, examining in detail the nasolabial folds and orbits.

Third screening

Held in the third trimester from 32 to 34 week. The main objective of the study is to adjust the process of labor according to the position of the fetus. The diagnostician carefully evaluates the work of all body systems. Particular attention is paid to the third screening Vienna Galen on the forehead of the fetus - according to her condition, you can determine the degree of development of cerebral vessels.

The main thing is not to forget - each organism is individual. Harmful or not, an ultrasound procedure can be said only by the doctor who is leading the pregnancy, taking into account all the peculiarities of the state of the mother and baby.

Is ultrasound harmful? Can the procedure harm the fetus? How often can you do an ultrasound scan for a pregnant woman?

Opinion Gariaev.

Petr Petrovich is the author of the monographs “The Wave Genome (1994)”, “The Wave Genetic Code (1997)”. In his works he developed the ideas of the scientist A. U. Gurvich. According to his ideas, a solution of nucleic acids, having a spatial organization in the form of chromosomes, thanks to histone proteins and other components of their environment, has a liquid-crystal structure. They are in a certain vibration, creating waves, the sound of which is like a certain melody. Moreover, using them, one can obtain coherent radiation as in a laser.

In the video below, the academician talks about the experiments, according to which, after exposure of chromosomes to ultrasound, the wave oscillation noted earlier disappeared. This may indicate that if in the implementation of the human genome some factors are associated with these fluctuations and radiation, the latter selects a possible development potential.

However, it is believed that there is no experimental confirmation of Gariaev’s theory, and academic science does not recognize Peter Petrovich’s work on the wave genome. In general, the opinion of a specialist takes place as a completely new concept of implementation, in opposition to or in addition to the classical theory of triplet coding of proteins with nucleic acids. Perhaps it will be further developed from practical positions.

Opinion Komarovsky

Evgeny Olegovich is a pediatrician. Since 2006, he opened a medical institution "Clinic", leads the show "School of Doctor Komarovsky." In one of the episodes of this telecast, he reports the fact that there is no confirmation of the negative effect of ultrasound waves on the fetus, and the only harm that can be associated with medical monitoring of the course of pregnancy is in the frequent and prolonged stay in the health care institution as such.

Opinions of other experts

On the Internet, in television, you can find a lot of views about the positive or negative impact of ultrasound diagnostics. So, it is reported on the incompetence of doctors in the field of knowledge of human nature. Obstetrician-gynecologists say that the harm of ultrasound is that it increases the tone of the muscles of the uterus, which can lead to miscarriages, especially in the early stages, and we need a more differentiated approach to the question of indications for such a diagnosis.

However, these arguments are unfounded. Medical practice is based on the achievements of science, in which one of the main places is occupied by research and statistical calculation. To date, there is no statistically reliable confirmation of the harmful effects of ultrasound on the course of pregnancy.

We can not say that modern medicine is perfect and understands all aspects. There are always cases when it is impossible to foresee something, and this unpleasantly ends. However, medicine is developing, trying to cover more and more problems and particulars. The actions of health care providers should be reasoned and, if possible, documented. For this reason, modern medicine is evidence-based.

Is it safe to undergo research

It is believed that ultrasonic waves can disrupt biological structures and have a bad effect, and therefore it is harmful to do ultrasounds in general, and especially during pregnancy. Let's try to figure out the ultrasound examination brings harm or benefit.

There is an opinion about the adverse effect of this effect on the cellular structures of the fetus under the influence of ultrasound waves on it. This is due to the appearance of cavities in the liquid. They have a very low pressure, so they function for a very short time and collapse. As a result, cell structures are destroyed. The effect of cavitation is used in some areas of medicine: neurosurgery, oncology, urology, plastic surgery, and others, where non-invasive removal or destruction of tissues and structures is preferred. This method is called histotripsy. Uses high-intensity ultrasound and focal direction. In addition, to perform this procedure, it is necessary to pretreatment into tissues (intravenously), which will be exposed to sound waves, special contrast agents. In such therapeutic procedures, an intensity from 0.1 to 1 W / cm² is used. However, this is excluded with diagnostic. In B-mode, it usually does not exceed the value of 0.1 W / cm². In addition, the waves used have a mechanical index of up to 1.9, at which the probability of cavitation is low.

Heat exposure

With a similar effect on biological structures with an intensity of 1 W / cm², the heating rate is 0.8 ° C and is much lower in diagnostic studies. It is usually leveled by convection - the dispersion of heat through the body through circulation. Due to the fact that in the fetus it is not integrated with the parent, the environment has a temperature of 37.0 ° C, and the body is still very small, convection is not as effective as in an adult. However, the effect is not so long and intense as to cause hyperthermia and is not so dangerous.

In addition, the local effect of ultrasound with a thermal effect causes dilation of blood vessels in this area and, therefore, improves blood flow. Therefore, uteroplacental blood flow may be more effective.

When using the Doppler mode, the intensity is sometimes higher and leads to a greater heating of the tissues. However, it is not used in early pregnancy. Some doctors believe that the use of doppler in the third trimester should be strictly due to the evidence.

Influence on biochemical processes

When exposed to waves with an intensity of 0.3 W / cm², an increase in the amount of nitric acid, which will cause a violation of the nucleic structure, can be determined. Higher indices of ultrasound intensity can damage the membranes and change the potentials on them due to the current of ions along charge and concentration gradients (which were created by these membranes), which disrupts nerve, muscle and glandular cells (first of all). In addition, these changes can cause ionic changes in the blood plasma, which will not make them wait for their effects.

However, such processes occur when the intensity is many times higher than the allowable for diagnostic procedures and is not always and not fully achieved with medical treatment.

Impact on immunity

Studies have been conducted showing that even low-intensity ultrasonic waves can disrupt leukocyte motility. At higher values, degranulation was noted (release of biologically active substances from them). In defense of ultrasound, it should be noted that low intensity is used for diagnostic purposes, and the mobility of cells that create immunity is fully restored after the end of exposure.


The harm of 3-D ultrasound during pregnancy is greatly exaggerated. Ultrasound is considered one of the safest diagnostic methods during pregnancy. However, ultrasound allows you to set many conclusions that really can and affect the further course of pregnancy and child development. Below are photos of indicators of maternal and infant mortality for significant periods of time.

The rate has declined significantly since 1980.

Infant mortality has declined significantly over the past century.

Of course, they are influenced by many factors, but ultrasound diagnostics allows doctors to suspect the problem in a short time in order to solve it in time.