Many parents place great importance on knowing the sex of the baby before it is born. Other parents remain curious and hope to meet you on the day of your birth. The ultrasound from week 20 can already analyze if the baby will be a boy or a girl, but can they tell you it's a boy and then be a girl?
The error is minimal, but a series of consequences can occur that cause an erroneous forecast to be maintained. Why happens? A misdiagnosed data is difficult to maintain until the day of delivery, since there are several ultrasounds that maintain that statement on more than one occasion.
It usually happens that in the first ultrasounds it is specified that it is a boy and then in the last one they confirm that it is a girl. Or vice versa. We analyze what the reasons are and why this type of mistake can exist.
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Are there mistakes about the sex of the baby when doing routine ultrasounds?
mistakes can be made, although the probability of committing a bad datum eThere is between 5% of ultrasounds that are practiced In other words, the success rate can range from 95%. Though everything will depend on the ease of the fetus to be seen in all the ultrasounds and the prediction of the sonographer himself to assess what he is observing at that moment.
At week 20 of gestation Clear data on the sex of the baby can already be given through a conventional ultrasound. There are gynecologists who dare to give a little before week 20, within their private practice. Due to social security, it is not possible to acquire said data and that is why they prefer to make sure at the right time.
At 12 weeks gestation Data on the sex of the baby can already be obtained through an ultrasound, since the direction of the nodule is evaluated. If it points in a vertical direction, it is likely to be a boy, but if it is observed horizontally, the forecast is that it is a girl. Even with being able to do it in week 12, it is better to wait until week 20 for more specific and related data.
Can the baby change sex during pregnancy?
The answer is no. From the moment of conception, the baby already contains all the genetic information to develop, It is the moment in which it is established whether it will be a boy or a girl. Therefore, the sex does not change during pregnancy. The fact that an imaging test is done and it is observed whether it is a boy or a girl, will be a moment that coincides with the affirmative vision of the gynecologist.
Getting the baby's sex right will depend on the position of the fetus next to other structures, sometimes seve what is not, or makes you doubt your prognosis. There is more chance of confusion when it is said that she is a boy and then it turns out that she is a girl. But there has been everything, there are also many cases in which it is observed that she is a girl and then she is a boy.
A blood test determines whether it will be a boy or a girl
Today there is a test where the mother's blood is needed to know the sex of the baby. The extraction is not invasive at all and where the baby will not feel anything. Its result has a high reliability index and can be performed at 8 weeks of gestation.
This test is performed by analyzing fetal DNA free that is present in the mother's plasma. When doing an examination of the maternal blood, the sex is verified, if the SRY gene appears (present on the Y chromosome) it will be male. It will also be tested for the presence of the SRY gene.
This test is linked to couples who they need to know the sex of the baby for any circumstance, including their own doubts about not being able to adequately predict sex using ultrasound. Other cases are associated when they need to know because of a family history of genetic diseases.