Pregnant woman with unicornuate uterus 8 months pregnant

All women should not want to have any problems with their uterus, because the uterus is an organ in the reproductive organs that nurtures life. If there is a problem with it, it will affect a woman's ability to conceive. In particular, the more common uterine malformation condition of unicornuate uterus can cause serious harm to pregnant women. If a patient with a unicornuate uterus becomes pregnant, special care should be taken during pregnancy. So what precautions should pregnant women with unicornuate uterus take when they are 8 months pregnant?

If the tail of the Müllerian duct does not fuse or fusion is abnormal in the female embryo during the 8th to 16th week of gestation, it may lead to abnormal development of the uterus. If the development of one side of the Müllerian duct stops, the result is a unicornuate uterus. A unicornuate uterus is also capable of conception, but the uterine cavity is smaller than that of a normal uterus. Different pregnancy outcomes are shown depending on the development of the unicornuate uterus and the size of the uterine cavity.

Here are some situations after unicornuate uterus pregnancy:

Normal delivery: If the unicornuate uterus is well developed, pregnancy and delivery can proceed normally;

Recurrent late miscarriage and premature birth: If the unicornuate uterus is hypoplastic, the uterine cavity is relatively narrow, and the myometrium is poorly stretched, late miscarriage or premature birth will usually occur repeatedly around 20 weeks. It is generally not treatable, and you can only try to use uterine relaxants to preserve the pregnancy. If the amniotic membrane ruptures prematurely or labor begins, the pregnancy can only be preserved for a week at most and is difficult to reverse.

Abnormal fetal position: The fetus’s movement in the uterine cavity is restricted. The incidence of abnormal fetal position is high, which can cause dystocia and most cases require cesarean section.

Obstetric complications: Poor development of the cervix and uterine muscle layer and uneven nerve distribution may cause uncoordinated uterine contraction, leading to obstetric complications such as premature rupture of membranes, premature birth, labor arrest, and postpartum hemorrhage.

Rudimentary horn pregnancy: If pregnancy occurs in the rudimentary horn of the uterus, more dangerous situations are likely to occur. Due to the poor development of the myometrium of the rudimentary horn of the uterus, if it is not clearly diagnosed before or in early pregnancy, the rudimentary horn pregnancy will often rupture naturally in the second trimester, manifested by severe abdominal pain and vaginal bleeding. The massive bleeding in the abdominal cavity can cause shock and thus endanger life. This is also one of the main reasons for the high mortality rate of unicornuate uterus combined with rudimentary horn pregnancy. Emergency surgery was performed simultaneously with rudimentary horn hysterectomy.