Group 3 positive compatibility. Signs of incompatibility of partners for conception: what to look for. Rh positive mother

Questions of blood compatibility are quite a relevant topic of modern medicine. It gained its significance with the development of genetics and immunohistochemistry, which were able to substantiate absolutely paradoxical cases in medical practice. After all, sometimes things happen that defy absolutely no logical justification. This happens especially often when determining the compatibility of blood for conception when planning a family, pregnancy or the need for a transfusion. All these paradoxes once again confirm that there is nothing absolute in medicine, since a lot of things are still covered with secrets that humanity has to reveal. But even what is already known deserves close attention.

The basic concept of the Rh factor

The specificity of any organism is determined by a set of proteins or antigens that are part of any tissue. In relation to blood and its erythrocytes, these are their surface antigenic complexes. One of them is the Rh factor or Rh antigen. Depending on its presence, all people are divided into Rh-positive (carriers of the antigen) and Rh-negative (people who do not have the Rh antigen). All life situations that are associated with the need to mix the blood of different people are determined by the ability of the blood not to disrupt its structure after such a procedure. In many respects it depends on Rh compatibility.

Important to remember! Compatible blood according to the Rh factor system is that which will be perceived by the body as its own. This means that only blood that is identical in terms of the Rh factor can be so!

Blood compatibility for conception

Family planning is a very correct direction of obstetrics, which has significantly reduced the number of complicated or unwanted pregnancies. This was manifested by the birth of a smaller number of seriously ill children. Today, every woman knows about all the threats that can await her and her child in the case of a cold-blooded attitude to some details of proper family planning. One of these details is the compatibility of the blood of sexual partners.

In fact, this topic is slightly misrepresented in the media. Everyone who misunderstood it interprets everything in his own way, spreading unreliable and, most importantly, untrue information. In this regard, it is worth considering the issues of immunological compatibility of spouses and compatibility of the blood of spouses at conception, which were mixed with each other and are discussed as one and the same problem. This sows panic and makes people look for a non-existent truth. Therefore, it is important to understand that:

1. The compatibility of spouses when a woman is unable to become pregnant does not depend on the compatibility of blood groups or the Rh factor, but on the immunological compatibility of a woman and a man. This means that antibodies are produced for the components of a particular male sperm in the body of a woman who simply does not perceive it. The group and the Rh factor have nothing to do with it at all;
2. An Rh-negative mother can give birth to a child with Rh-positive blood. This can only affect the course of pregnancy and the condition of the fetus, but cannot be regarded as Rh factor incompatibility for conceiving a child;
3. A couple with different Rh factors can quite easily have healthy children. It is not necessary to destroy the relationship due to the fact that the Rhesus of the mother and fetus can potentially be incompatible. But you should definitely follow the recommendations in the framework of family planning, which will be pointed out by specialists. Some of these recommendations are given in the next section.

It is impossible to reliably predict the development of Rh-conflict pregnancy

Blood compatibility during pregnancy

If a married couple has decided on pregnancy, they must follow this process from the planning stage to the birth of a child. With regard to the potential for Rhesus conflict during pregnancy, the following should be alert:

• Married couples in which the woman is Rh-negative and the man is Rh-positive. The maximum probability of a conflict pregnancy is 50% if the partner is homozygous (each of the chromosomes of one pair encodes the Rh antigen) and 25% if it is heterozygous (Rhesus is encoded by only one chromosome of the pair);
• Spouses whose blood mixing is potentially capable of ending with an Rh-conflict pregnancy, with previous pregnancies and childbirth. Their favorable outcome does not mean anything. On the contrary, the likelihood of developing maternal and fetal blood incompatibility increases with each subsequent pregnancy.

Compatibility of blood groups and the table is compatible with the Rh factor with possible options for its inheritance by the child.

Note: A homozygous is a person who contains identical genes on similar chromosomes. They, getting into the composition of the chromosome set of the fetus, will unambiguously encode the synthesis of the Rh factor. A heterozygote contains such a gene only in one of the chromosomes, which significantly reduces the risk of its inheritance.

Important to remember!!!

1. The blood of an Rh-positive mother is compatible with any fetal blood;
2. The probability of a conflict in the Rh system is possible only in mothers with Rh-negative blood and does not exceed 50%;
3. The inheritance of the Rh factor by a child depends not only on the actual Rh of the parents, but also on the set of genes that did not manifest themselves, but were inherited by the child.

Donor compatibility

Despite all modern concepts and the desire of physicians to avoid transfusion of blood and its components, in practice this is not feasible. After all, thousands of situations arise every day when only these drugs can save a person's life. One of the main postulates in this regard is the determination of the compatibility of the blood of the donor and the recipient. Indeed, otherwise, inappropriate blood will not only not help, but will also cause the death of the patient.

With regard to donor compatibility, only erythrocyte preparations (erythrocyte mass and washed erythrocytes) are considered. Before direct blood transfusion, blood group compatibility and Rh compatibility are determined. In the classic version, only blood with an identical Rh factor and group is considered absolutely compatible. But this rule does not always work in practice. In some situations where an emergency blood transfusion is required in a matter of minutes, there is no time to determine compatibility. The only salvation is the transfusion of whole blood or red blood cells on the principle of hypothetical compatibility. Its options are given in the form of a table.

The following practical conclusions can be drawn from the table:

• People with the first blood group are, but they themselves can only become recipients of the blood of the first group;
• People with are a universal recipient, although they themselves can only be donors for people with the fourth group;
• Donor compatibility is possible only if the donor's erythrocytes do not contain the appropriate antibodies that will cause their destruction after transfusion.

Important to remember! Blood compatibility for the Rh factor is determined only in two ways, regardless of group affiliation: people with Rh-negative blood can only be transfused with Rh-negative blood. People with Rh-positive blood can become recipients of blood, both Rh-positive and Rh-negative donors!

During pregnancy planning or in case of impossibility of conception, young couples try to understand the reasons for this situation. Tests for blood type and Rh factor are some of the first tests that need to be taken. These indicators will help not only indicate a probable problem, but also predict the further course of the gestation process and even the blood type of the unborn child.

The concept and methods of determining blood group and Rh factor

Each person has an individual blood composition. However, doctors have identified several of its species with similar features. Belonging to any of them is determined by the content of proteins and erythrocytes in the blood. Various combinations of these components belong to one of the 4 blood groups - I, II, III, IV.

In addition to the presence in the blood of any substances, Rh is usually immediately determined. This parameter indicates the content of a certain component on the surface of erythrocytes. Rh-positive people have such a substance, but Rh-negative people do not.

When creating a family and wanting to have a child, a couple faces questions about whether they are compatible with each other, what the gender of the child will be, whether or not they can have children. Most reproductologists claim that blood type does not affect the ability to conceive a child. Having received this data about the parents, it is possible to predict with high accuracy the risk of pathologies in the planned baby.

The composition of the blood is stable and does not change with age. In medical sources, there is information that the Rh factor changes from time to time, but this is a misconception. This point of view was formed due to the weakly positive Rh, which occurs in less than 1% of people. This is a special type of blood in which the amount of antigen can change throughout life.

Do blood types and Rh of future parents affect the likelihood of conception?

There are two opposite opinions about the effect of blood on the conception and course of pregnancy. Some doctors argue that a woman with 1 blood group will not be able to easily get pregnant from a partner with the same indicators. A girl with group 2 is only compatible with men of groups 1 and 2. A woman with type 3 can count on a successful pregnancy from men with groups 1, 2 and 3, etc. If partners have the same blood type, then the appearance of a joint child is unlikely.

Recently, more and more doctors refute this position. The cause of reproductive problems in women can be immunological incompatibility. In this case, male spermatozoa are rejected by the female body. Sometimes this phenomenon is justified by the blood type of partners. In fact, this indicator does not matter - this is provoked by other reasons. It is currently being successfully treated.

Incompatibility of partners may occur with differences in the Rh factor. It is better to determine compatibility before planning a pregnancy. Several analyzes will help to avoid problems in the future.

Partners with the same Rh are ideal for conceiving children. If the mother has a Rh factor with a plus sign, and the father has a minus one, then this will not affect the continuation of the family. Difficulties arise with a negative indicator in a woman if a man has such a component in his blood.

Table of blood compatibility of partners for conception

You can predict the compatibility of a blood type with your partner using the following table:

If you find that you are incompatible with your partner, then do not get upset ahead of time. Recently, doctors have argued that this parameter is only relevant for medical procedures and does not affect the possibility of bearing a baby and the likelihood of developing pathologies. This may not be the reason for not getting pregnant.

What is Rh conflict, is it dangerous for the mother and fetus?

A compatibility problem can only arise when the mother has a negative blood type and the child has a positive one. In most cases, such incompatibility becomes known already at a long gestation period. During the first pregnancy, the situation is not dangerous, but problems can arise with the 2nd, 3rd and subsequent child.

A child born with a Rh-conflict of parents may experience an increased level of bilirubin, anemia, developmental delay and other unpleasant phenomena. During the neonatal period, such children need enhanced medical supervision.

If the mother's Rh is positive, and the baby's Rh is negative, then the woman's body creates antibodies that fight the fetus as a harmful substance. During the first pregnancy, this does not pose a danger, because the resistance of these components is weak, and they do not cross the placenta. The baby is not hurt. However, such opposition remains in the genetic memory, and during subsequent pregnancies, the woman's body resists more strongly. Antibodies can cause intrauterine death of the baby by attacking the heart, kidneys and liver of the baby, or premature birth.

This probability must be taken into account, even if the first pregnancy did not end with the birth of a child. To prevent Rh conflict within 2 days after childbirth, abortion, miscarriage, a woman needs to enter anti-Rhesus immunoglobulin. The sooner this drug is administered, the more effective it will be.

The concept of immunological and genetic incompatibility

If the partners are healthy, systematically have sex and are not protected, but the woman cannot become pregnant, then this is a reason to seek medical advice. Incompatibility is said to occur when the following symptoms are observed:

• conception does not occur for 12 months, subject to regular sexual intercourse;
• miscarriages in the first 12 weeks after conception;
• intrauterine fetal death.

Various factors can affect the ability to conceive and bear a healthy child. To find out the cause of miscarriage, special tests are carried out and treatment is prescribed.

Immunological incompatibility is expressed in particular women's antibodies. The immune system may perceive the components of the sperm of a particular man as foreign and dangerous and reject it. This reduces the likelihood of pregnancy or makes it impossible.

With the genetic incompatibility of the couple, there is a possibility of the birth of a child with deviations and various pathologies.

Possible reasons:

1. the presence of genetic diseases that can be inherited;
2. the age of a man and a woman is more than 35-40 years;
3. husband and wife are blood relatives;
4. bad ecological situation.

Complete incompatibility is extremely rare, and with partial conception and gestation is possible. The main thing is medical control from the first weeks of pregnancy.

Is it possible to prevent the incompatibility of blood group and Rh partners?

In order to avoid problems with conception, you need to take care of your health in advance. Girls are not recommended to have abortions and blood transfusions.

When performing medical procedures, there is a possibility of introducing blood with the wrong Rh. In this case, immunization to antigens occurs. Transfusion should be carried out only according to indications.

In the 21st century, incompatibility in blood type and Rh factor is not a serious problem. It is unlikely that anyone would think to choose a life partner based on these indicators. The main thing is to be aware of possible difficulties in advance. Modern medicine allows you to overcome problems with conception in such situations and helps to control the reactions of the body.

If conception has occurred, and there is a possibility of complications, then medical workers will try to do everything possible to preserve the health of the mother and the unborn baby. To reduce the risk of unpleasant consequences for a period of 28-29 weeks, a pregnant woman is given injections of immunoglobulin. This will ensure the normal development of the fetus. After such therapy, a woman should take care of herself, since the immune system is weakened.

What blood type will the child have?

Geneticists are sure that the composition of the blood is inherited from the parents in the same way as all other characteristics. If there is data on the blood types of the mother and father, then it is possible to predict data on the composition of the baby's blood:

Negligence in relation to health is unacceptable, therefore, each person must once and for all remember important information about himself, namely: blood type and Rh factor. Why is it so necessary? Firstly, knowing your blood type can help in an emergency or doctors (although they will definitely double-check it to know for sure) if a blood transfusion is suddenly needed. Secondly, this information plays a crucial role in the course of conceiving a child. It is important to understand whether the parents are compatible in these two indicators. Incompatibility can lead to serious problems.

Compatibility of future parents by Rh factors

Rh factor incompatibility can lead to problems even with conception, this is called a conflict pregnancy. Of course, it does not always develop, so the table shows the percentages to which they correspond. Rh incompatibility is an immune response of an Rh-negative mother to the erythrocyte antigens of an Rh-positive fetus, in which anti-Rh antibodies are formed, which cause the breakdown of red blood cells, which leads to serious problems in the fetus.

Compatibility of future parents by blood types

The blood type also depends on the proteins on the surface of red blood cells. In blood group 1, proteins are absent, in 2, 3 and 4 they have their own individual characteristics. If the child inherits the protein that the father has, but the mother does not, a conflict with the mother's body may occur. Such situations are much less common than Rh incompatibility, but you still need to know about them. Read the table carefully to know in advance if you may have complications.

What to do in case of incompatibility?

It is important to note that during the first pregnancy, problems with Rh incompatibility can be avoided, since it develops rather slowly. And yet, as a preventive measure, modern doctors prescribe an injection of immunoglobulin for a period of 28 weeks. This injection slows down the development of antibodies so that they cannot harm the fetus. Sometimes a second procedure is performed at the 34th week of pregnancy.

Of course, a conflict pregnancy should take place under the close supervision of a gynecologist. During such a pregnancy, a woman should often take all the necessary tests so that the doctor can monitor the development of the fetus in order to avoid any complications (ultrasound, CTG, amniocentesis - only if indicated).

It should be noted that although this is a serious problem that needs increased control by doctors, a couple that has incompatibility is not doomed! Firstly, there is a possibility that a conflict pregnancy can be avoided and everything will be fine. Secondly, with proper examination by doctors throughout pregnancy, complications can be avoided by joint efforts. Be attentive to your health!

This article is for informational purposes only. Do not self-medicate and in any case consult a qualified medical professional before using any of the information provided in this article. The editors do not guarantee any results and do not bear any responsibility for the harm that may be caused as a result of using the information contained in the article.

In the human body, all cells contain special proteins on their surface that help them recognize foreign substances and fight them to protect the body.

Recognizing a foreign object, the cell sends a signal to produce protective antibodies (immunoglobulins of different classes). They move towards the object and destroy it.

The embryo carries two genetic components: half from the mother and half from the father. When these data do not match, the woman's body recognizes a condition such as pregnancy and produces protective antibodies for the fetus and placenta. This is what allows you to avoid the natural rejection of the embryo and allows the child to grow and develop normally in the womb.

When the genotype of the father and mother are too similar to each other, the woman's body does not understand that pregnancy has occurred. He perceives the embryo as his own, but modified cells. Considering this a pathology like a cancerous tumor, the body begins to produce antibodies against the embryo, which prevents the fetus from gaining a foothold in the uterus or contributes to its rejection and miscarriage.

There are no people with the same set of genes.

How to check partner compatibility

Both partners must be tested. Initially, you can find out about incompatibility by blood type and Rh factor. Women with the first blood type, the Rh factor is positive, never experience partner incompatibility for this reason. The fourth group with negative Rh is the most difficult. A woman in this case must find a partner with an identical blood type. If the problem lies in genetic incompatibility, only laboratory tests will help determine this.

Many couples check compatibility by horoscope and divination

It is important to understand that only traditional medicine will help in such cases!

Postcoital test

When planning a pregnancy, you can take a test for individual compatibility of spouses in order to identify a rare, but very significant factor of infertility in time. Cervical mucus in the cervix performs a protective function, providing a barrier to microbes in the upper parts of the reproductive organs.
If an individual reaction to the husband's spermatozoa occurs, a cervical infertility factor can be detected using a postcoital test: male germ cells cannot overcome the cervical barrier, so there is no pregnancy. The conditions for the test are:

• examination on the day of expected ovulation;
• preliminary abstinence from intimacy for 2 days;
• after sexual intercourse, it is necessary to lie for about 2 hours with an elevated position of the pelvis;
• hygienic procedures cannot be carried out.

During a routine gynecological examination, cervical mucus should be taken for examination. In the laboratory, you can find out the presence of sperm in the mucus.

Normally, vaginal discharge during ovulation is the most optimal for conception. Cervical mucus should be:

In good conditions, spermatozoa easily penetrate the uterus, but with thick and viscous mucus, it is extremely difficult for male germ cells to overcome the cervical barrier.

Important factors indicating the compatibility of partners will be the following indicators:

• live spermatozoa;
• good mobility;
• active progressive movements.

A poor compatibility result indicates the presence of immobile or "treading water" germ cells. In this case, you can do an analysis for antisperm antibodies detected in the blood of a woman and in cervical mucus. If they are detected, the doctor will offer the option of artificial insemination for successful conception.

When planning a pregnancy for a married couple, it is advisable to identify incompatibility factors in advance. It is imperative to take a blood test for the Rh factor in order to identify the risk of future complications in case of incompatibility of the spouses. The need for a postcoital test arises in cases where the doctor sees no reason for infertility, and the desired conception does not occur

It is important to carefully follow the prerequisites and test on periovulatory days

If individual incompatibility is identified, for conception, it will be necessary to use the option of artificial insemination, when, using a special procedure, male germ cells enter the uterus, bypassing the cervical barrier.

The mismatch of Rh factors is quite common, but this is not at all an obstacle to the realization of a dream. The main thing is to listen to the doctor, follow the recommendations of the specialist, and everything will turn out fine, right?

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What tests are given

If there are signs of infertility, partners are prescribed a comprehensive examination. Women are prescribed the following tests and studies:

1. General blood analysis. Determines the level of hemoglobin, which is responsible for the development of iron deficiency anemia. Pathology affects the intrauterine development of the fetus. Platelet levels are responsible for blood clotting. Leukocytes indicate the presence of infection. The main indicator of the inflammatory process is ESR.
2. Blood chemistry. Determines the metabolic processes in the body, the absorption of proteins, fats, carbohydrates, minerals. Helps to determine the presence of pathology of the digestive system.
3. Coagulogram. Carried out to determine blood clotting to prevent the formation of bleeding during pregnancy. Often occur in the first trimester and cause miscarriage.
4. General urine analysis. Determines inflammation, infection in the genitourinary system.
5. Blood test for sugar level. Initial diagnosis of diabetes mellitus. The presence of pathology affects pregnancy and its planning.
6. Group and Rh factor of blood. Carried out to prevent the risk of developing hemolytic disease in the fetus.
7. Colposcopy. Examination of the cervix and vagina in women.
8. Ultrasound diagnosis of the pelvic organs.

Tests for men:

1. Analysis for sexual infections. A scraping is taken from the urethral mucosa to detect chlamydia, Trichomonas, gonococci, herpes virus and papillomavirus, ureaplasma, Toxoplasma, Epstein-Barr.
2. Spermogram. The state of spermatozoa, their concentration, quantity, mobility are determined. The function of the prostate gland, testicles is indicated.
3. General analysis of blood and urine. Determines inflammatory processes, the presence of infection in the body.
4. Blood chemistry. Displays the functionality of the liver, organs of the digestive system, kidneys.
5. Group and Rh factor of blood. It is carried out to exclude the Rhesus conflict.
6. Analysis for the presence of hepatitis C and B, HIV and AIDS.
7. Hormonal panel. The level of testosterone, insulin, gonadotropin.
8. Ultrasound and EKG.

Men and women should undergo a similar examination once a year or every 6 months. This will help to detect the problem in time!

Tests for compatibility when planning pregnancy

Initially, the couple goes to the doctor. A woman is consulted by a gynecologist, a man - by a urologist. After that, the doctor prescribes an appropriate examination for each.

The main cause of infertility is the genetic incompatibility of partners. In this case, an analysis is prescribed to determine the mismatch in the chromosomes of the future parents. For this study, blood is taken from a vein in a man and a woman.

Why take compatibility tests?

Partner compatibility tests are the key to a successful pregnancy. A complete examination of male and female health determines the cause of infertility. Compatibility is another pathology.

The female body perceives the sperm of a certain man as harmful cells. It produces antibodies to them and destroys them. The spermatozoa of another man will be perceived as expected.

Analysis for the compatibility of partners for conception

The study determines the number of spermatozoa and their mobility in the cervical mucus of the cervix. The collection is carried out 6-12 hours after sexual intercourse. You can get a reliable result if you take an analysis during the period of ovulation. Before the examination, you should undergo a 3-month preparation:

• measure basal temperature and record the results;
• have regular sex life;
• do not use contraceptives and hormonal drugs;
• limit medication;
• to refuse from bad habits.

Important! Before planning a relationship, they are examined by a venereologist. This will help eliminate the risk of contracting sexually transmitted diseases!

What tests are carried out?

The postcoital test or the Shuvarsky test is considered the main test for determining the compatibility of partners. Helps to determine the factor of infertility. The essence of testing is to determine active spermatozoa. It is prescribed if infertility appeared due to unknown factors, or in connection with immune genesis.

Tested during ovulation. Ovulation tests will help determine the exact time of this process. After that, the Shuvarsky test is performed. She is appointed again, 1 month after the first test.

Analysis

With the immunological incompatibility of the spouses, this mechanism fails. First of all, the process of changing the viscosity of mucus may be disrupted. Scientists believe that such changes become possible when the concentration of proteins and ions changes in a certain way in relation to cellular elements. The viscosity of mucus may increase with the onset of menstruation. And during this period, this indicator can be at its maximum. In addition, the permeability of spermatozoa is affected by such properties of mucus as extensibility and crystallization.

Many are interested in the name of the test for the compatibility of partners for conception and how the compatibility of spouses is checked. The compatibility test is called the postcoital test. He is usually appointed only after twelve months from the moment the spouses decided to conceive a child. The compatibility of partners for conceiving a child is checked using a test the day before ovulation. If you count from the first day of menstruation, then the analysis is carried out on the 13th day of the cycle. To more accurately determine the onset of ovulation, a test for the content in the body of such a hormone as luteinizing hormone can help. Its high level indicates that the process of ovulation has begun. You can perform an ultrasound of the ovaries, and by the degree of their maturity, approximately determine the date of the compatibility test.

Before this analysis, a spermogram is done to a man. Both partners are tested for sexually transmitted infections. Any infection can distort the results of the analysis. With the help of a spermogram, the mobility and viability of spermatozoa are determined

It is especially important that the spouse is healthy. The presence of any infection, including SARS, can make adjustments to the test result

An unreliable analysis may be if it was not carried out during the onset of the ovulation stage. If the mucus was taken for analysis a day after intercourse. Affects the results of the analysis and the use of hormonal drugs. The results of the analysis can be both positive and satisfactory. A much worse prognosis for conception is given by doctors if the conclusion is a dubious or poor result.

With a positive test, more than 25 spermatozoa with a high degree of activity are found in the mucus. In this case, the partners are fully compatible. If there are half as many motile sperm in the sample, the chance of conception is close to normal. Pregnancy may not occur if the sample contains less than ten normal spermatozoa.

A test is bad if, when examining a sample, only immobile spermatozoa are found in it. In this case, the partners are not very compatible, and the chance of a natural pregnancy is extremely low. With a negative analysis, not a single germ cell of the partner was found in the sample.

Usually a medical opinion is issued on the basis of several tests. A test for the presence of antisperm antibodies in the mucus sample is mandatory. The interval between compatibility tests should be three months. Only after that, doctors will be able to give a reliable conclusion on how compatible the partners are.

Blood type compatibility for conception

The term "blood type" is familiar to everyone. But not everyone knows how important this characteristic is for the further continuation of the human race.

Blood types for conception - what are they

Each parent has one of four blood groups - I (or O), II (or A), III (or B), and IV (or AB). Belonging to a particular category is determined by the presence of certain proteins - agglutinins α and β in plasma and agglutinogens A and B in red blood cells - erythrocytes. Such "protein combinations" formed the following blood groups:

• The first group - group (O), is determined by the presence of antibodies α and β, there are no antigens.
• The second group, group (A), is characterized by the presence of antigen A and antibodies β.
• The third group, group (B), is determined by the presence of α and B proteins.
• The fourth group - group (AB), is characterized by the presence of antigens A and B, there are no antibodies.

Many parents wonder if their blood type affects successful conception and subsequent pregnancy. It is worth mentioning right away that it is the group that does not influence these processes in any way. However, depending on the initial data of the parents, one can assume a certain share of the risk of developing certain abnormalities. Knowing the blood type of the parents, it is possible to calculate the blood type of the unborn baby as a percentage. The results of the compatibility of blood types for conceiving a child are clearly shown in the table below.

• So, if both parents are carriers of the first blood group, then their baby with a 100% probability will also have such a group.
• The combination of the first and second or first and third groups will give an equivalent probability of the appearance of babies with the first and second, and the first, and third blood groups, respectively.
• The most unpredictable is the combination of the second and third groups, since in this case your little one can have absolutely any blood type.

Immunological conflict

A responsible approach to planning and bearing a baby can significantly reduce possible negative phenomena that sometimes happen within 9 months of waiting for replenishment. One of the preventive tests - determining the compatibility of blood group partners - may not play a special role for conception, but for the further development of the little one, its significance can be very great. A possible conflict between a mother and a baby in her womb due to the Rh factor is practically not news to anyone. But not everyone knows about the compatibility of blood through the mother-baby connection for conceiving and bearing a child. There are some combinations that can cause complications during pregnancy.

1 blood group: compatibility for conception. If the mother has the first blood type, and the father of the child has any other, a conflict in the ABO system is possible. If the child has any other than the first blood type, then when meeting with the mother's blood cells, antibodies α and β destroy red blood cells with a foreign antigen. However, do not panic in advance. The presence of the situation described above by blood group does not always provoke a conflict, and even without third-party intervention, healthy children are born. If the expectant mother wants to make sure, then after the 30th week she can take (with a frequency of once a month) an analysis for group antibodies. This conflict (if detected) is less dangerous than Rhesus. Moreover, with each subsequent pregnancy, the risk of its occurrence often decreases.
2 blood group: compatibility for conception. When the blood of the second group circulates in the body of the expectant mother, then the likelihood of incompatibility with the baby arises if the blood of the father of the third and fourth groups.
3 blood group: compatibility for conception

Closer attention is required when the father of the child has group A or AB (the second and fourth, respectively), and the mother has the third group.
4 blood group: compatibility for conception. If a woman has this blood type, then there is no likelihood of conflict.

This information does not in any way suggest that people with "possibly incompatible" blood types should not have children or that such a pregnancy would be inherently problematic. It's just that future mom and dad should know that a certain combination of blood types may require additional attention (blood test, ultrasound) on their part. If antibodies are detected in the blood of a pregnant woman, treatment is not prescribed immediately and not always - the doctor monitors the dynamics of this indicator. If intervention is necessary, therapy is prescribed. The most effective and safe method is plasmapheresis, although it also has a number of contraindications. When a conflict is detected, the doctor selects the optimal therapy.