Pregnancy and childbirth are one of the most important things for women in the world, but as a woman, there are many dangers during the pregnancy process. Expired pregnancy is something that many women have to face. Many women experience expired pregnancies due to various reasons. So what about expired pregnancy? What are the reasons for expired pregnancy?
1、 What is an expired pregnancy
When the pregnancy reaches or exceeds 42 weeks (>=294 days), it can be called an expired pregnancy, with an incidence rate of 5% -10%, and is a type of high-risk pregnancy. The mortality rate of fetuses with expired pregnancies is higher. When a mother experiences an expired pregnancy for the first time, the risk to the fetus is higher.
2、 Causes of Expired Pregnancy
1. The fetal head has not entered the pelvic cavity
If the fetus is large in size and the fetal head is not inserted into the pelvic cavity in a timely manner, the stimulation of the cervix is not sufficient, and the labor process will be prolonged as a result.
2. Abnormal fetal development
When pregnant with an anencephaly fetus or polyhydramnios, the uterus cannot be effectively stimulated, causing regular contractions and resulting in delayed delivery.
3. Endocrine disorders
Endocrine disorders can affect the abnormal secretion of progesterone, estrogen, and prostaglandins in pregnant women's bodies. Once there is insufficient secretion of estrogen and prostaglandins before delivery, and excessive secretion of progesterone, it will affect uterine contractions and lead to prolonged labor.
4. Low activity and high nutrient intake in late pregnancy
Pregnant women in the late stage of pregnancy have low activity levels and excessive nutrient intake, which is one of the reasons for inducing expired pregnancy.
5. Family inheritance
There is a family history among some women with expired pregnancies, so genetic factors cannot be ruled out.
This article provides a detailed introduction to how many weeks an expired pregnancy is and the reasons for it. If you are a pregnant woman and want to make your pregnancy process smoother and avoid expired pregnancies, it is best to actively understand the causes of expired pregnancies and actively avoid their occurrence.
