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Miscarriage, a common accident in early pregnancy that is traumatic. The causes are numerous, but in the majority of cases, miscarriages result from a malformation of the egg that the body eliminates spontaneously.
What is miscarriage?
- A miscarriage is the interruption of a pregnancy before the date of viability of the fetus, that is to say before the 180th day of pregnancy. Beyond this date, we speak of premature birth.
- There are two categories of miscarriage: early miscarriages that usually occur during the first trimester of pregnancy, and late miscarriages that occur in the second trimester. Isolated miscarriages and recurrent miscarriages are also distinguished because their prognosis is not the same.
How is the isolated miscarriage?
- Isolated miscarriage occurs for the first time in a woman who has had children, or in a woman whose first pregnancy; and the isolated term means that this accident will not happen again.
- 50 to 70% of so-called isolated miscarriages are due to abnormalities of the egg that cause a spontaneous interruption of pregnancy, usually during the first 3 months. It is a fortuitous accident that can occur either at the time of formation of sexual reproductive cells (gametes), or at the time of fertilization of the egg by the spermatozoon. Nature does things well, since it does not allow an unsustainable egg to continue its development in utero.
- In this case, the diagnosis is made either because the woman is alerted by bleeding when she knows she is pregnant, or because an early ultrasound reveals that the pregnancy stopped before the bleeding started. to happen.
Sometimes before the end of the first trimester, small bleeding like menses may occur. What is it exactly?
- 40% of miscarriages due to egg abnormalities are eliminated so early that they manifest as bleeding of the same nature as menses, but a few days late, and many women are unaware that they have been pregnant.
- In early pregnancy, bleeding may occur, which does not necessarily reflect the possibility of miscarriage; In this case, it is necessary to consult the doctor who will prescribe an ultrasound.
Does miscarriage always occur with bleeding?
- Not always, some pregnancies ending spontaneously without the expulsion of the egg. In this case, it is the clinical examination which makes it possible to suspect the termination of a pregnancy in the absence of growth of the uterus. And it is the ultrasound which will confirm it by showing either a clear egg (an egg not containing an embryo), or an embryonated egg, but whose embryo presents neither active movement nor heartbeat.
- It should be noted however that ultrasound has its limits and must always be interpreted according to the context, because an egg is visible in ultrasound only from 5 weeks, and an embryonic ultrasound with heartbeat is generally not visible until the 7th week, and provided you are sure of the date of the rules and the date of the beginning of pregnancy.
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