Anencephaly: When the Neural Tube Fails to Close during the First Month of Pregnancy

Two-thirds of the mother is triggered or caesarean section for mothers with full term birth. Excess amniotic fluid is present in 30% of cases, accounting for 60% of premature infants. In caesarean delivery, 4% die at birth, 53% die within 24 hours, 30% die within 5 days, 13% survive for more than 6 days. In deliveries from the vagina, 37% of the babies die at the time of birth by a doctor or midwife to rupture the amniotic membrane, contrary to 18% if the amniotic membrane bursts spontaneously.

Neural tube defects are congenital defects in the brain, spine or spinal cord. They occur during the first month of pregnancy, usually before a woman knows that they are pregnant. The two most common neural tube defects are not spina bifida and brain malformations. In the spina bifida, the fetal spine is not completely closed. Nerve damage usually causes at least some paralysis of the foot. Without brain malformations, most brains and skulls do not develop. Infants without brain malformation are usually dead or die soon after birth. Another type of defect, Chiari malformation, expands the brain tissue into the spinal canal

If the neural tube does not develop normally, it can cause birth defects in the brain, spine or spinal cord. Most of these flaws occur during the first month of pregnancy (usually before the woman realizes she is pregnant) and the two most common forms of neural tube defects are spina bifida and brain malformations It is not. In the spina bifida, the spine is never completely closed, it is neither complete nor fully developed. The most common side effect of this type of defect is partial or complete paralysis of the foot. Without brain malformations, most of the brain and skull can not develop. As a result, the embryo usually has a spontaneous abortion, and even if it is born it can not survive for a long time. A less common neural tube defect is a Chiari malformation that occurs when the embryonic brain tissue expands into the spinal cord.