A defect in brain development resulting in small or missing brain hemispheres. A congenital absence of the brain and cranial vault, with the cerebral hemispheres completely missing or greatly reduced in size.
2007-05-20 07:44:40
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answer #1
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answered by RadTech - BAS RT(R)(ARRT) 7
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What is Anencephaly?
Anencephaly is a defect in the closure of the neural tube during fetal development. The neural tube is a narrow channel that folds and closes between the 3rd and 4th weeks of pregnancy to form the brain and spinal cord of the embryo. Anencephaly occurs when the "cephalic" or head end of the neural tube fails to close, resulting in the absence of a major portion of the brain, skull, and scalp. Infants with this disorder are born without a forebrain (the front part of the brain) and a cerebrum (the thinking and coordinating part of the brain). The remaining brain tissue is often exposed--not covered by bone or skin. A baby born with anencephaly is usually blind, deaf, unconscious, and unable to feel pain. Although some individuals with anencephaly may be born with a rudimentary brain stem, the lack of a functioning cerebrum permanently rules out the possibility of ever gaining consciousness. Reflex actions such as breathing and responses to sound or touch may occur.
The cause of anencephaly is unknown. Although it is thought that a mother's diet and vitamin intake may play a role, scientists believe that many other factors are also involved.
Recent studies have shown that the addition of folic acid (vitamin B9) to the diet of women of childbearing age may significantly reduce the incidence of neural tube defects. Therefore it is recommended that all women of childbearing age consume 0.4 mg of folic acid daily.
Is there any treatment?
There is no cure or standard treatment for anencephaly. Treatment is supportive.
What is the prognosis?
The prognosis for babies born with anencephaly is extremely poor. If the infant is not stillborn, then he or she will usually die within a few hours or days after birth.
2007-05-20 07:46:29
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answer #2
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answered by MyKidsInheritance 2
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Anencephaly is a cephalic disorder that results from a neural tube defect that occurs when the cephalic (head) end of the neural tube fails to close, usually between the 23rd and 26th day of pregnancy, resulting in the absence of a major portion of the brain, skull, and scalp. Infants with this disorder are born without a forebrain, the largest part of the brain consisting mainly of the cerebral hemispheres (which include the isocortex, which is responsible for higher level cognition, i.e., thinking). The remaining brain tissue is often exposed - not covered by bone or skin.
2007-05-20 07:44:46
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answer #3
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answered by jaslene 3
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my mother had a baby who was ANENCEPHALY, i guess she was missing 1/2 of her skull. Thats why folic acid is VERY important to take during pregnancy.
2007-05-20 07:48:50
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answer #4
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answered by oxxrachaelxox 1
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It's a medical problem in fetal development. The brain doesn't form properly.
2007-05-20 07:44:53
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answer #5
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answered by Anonymous
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according to merriam webster:
congenital absence of all or a major part of the brain
2007-05-20 07:44:07
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answer #6
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answered by mender_bender2001 5
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underdeveloped brain, no chance for long term survival
2007-05-20 07:46:36
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answer #7
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answered by Anonymous
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underdeveloped brain
2007-05-20 07:44:56
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answer #8
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answered by petra 5
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