Unrecognized fetal growth restriction, where it is not identified that the fetus is small for its age.Medical complications in the mother: Medical conditions, such as diabetes, were linked with less than 1 in 10 stillbirths.Stillbirths linked to this factor are thought to be more common at the end of the second trimester and the beginning of the third, compared with other stages of pregnancy. High blood pressure disorders: These include chronic high blood pressure and preeclampsia (pregnancy-induced high blood pressure).This tends to occur more toward the end of pregnancy. Problems with the umbilical cord: One example is, the cord can get knotted or squeezed, cutting off oxygen to the developing fetus.Birth defects: A genetic or structural birth defect is identified in 1 of every 5 stillborn fetuses.It has been estimated that 10% to 20% of all stillbirths in developed countries, such as the United States, can be attributed to infections. Infections are much more likely to be the cause of death in stillbirths before week 24 than in those after. Infection: This includes infection in the fetus or placenta, or a serious infection in the pregnant person.They are estimated to be the likely cause of 1 in 4 stillbirths. In studies, these deaths tended to occur after 24 weeks of pregnancy. Problems with the placenta: An example of this is not enough blood flow to the placenta.They are estimated to be the likely cause of 1 in 3 stillbirths. In studies, these complications were the more common causes of stillbirths before week 24. Pregnancy and labor complications: These include preterm labor, pregnancy with multiple babies (such as twins or triplets), and separation of the placenta from the womb (placental abruption).
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