Down Syndrome

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  • Topic: Down syndrome, Chromosomes, Chromosomal translocation
  • Pages : 2 (351 words )
  • Download(s) : 45
  • Published : December 5, 2012
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DOWN SYNDROME
TRISOMY 21
BY: CYNTHIA AGUILAR

11/05/2012

Down syndrome affects many people in this world. Not only does it affect the person diagnosed as Downs, but it also affects their family and everyone around them. There are physical characteristics that help you identify somebody with Downs. There are also some health concerns that you need to worry about. Down's Syndrome, it is one of the most frequently occurring chromosomal abnormalities found in humans effecting people of all ages, races and economic levels. It is a chromosomal anomaly in cell development that results in a person being born with forty-seven chromosomes instead of the normal forty-six chromosomes. People with Down syndrome may have mild to severe learning disabilities and physical symptoms, which include a small skull, extra folds of skin under the eyes, and a protruding tongue. Roughly one out of every one thousand children born making it the most common genetic disorder. Down syndrome affects over 350,000 people, in the United States alone. Yes, it is possible to detect Down syndrome when the infant is in the uterus. You can do so by screening tests like the Triple Screen and the Alpha-fetoprotein Plus. Both tests measure quantities of various substances in the mother’s blood, and together with the woman’s age, estimate her risk of having a child with Down syndrome. Typically they are offered between 15 and 20 weeks of pregnancy. More accurate are diagnostic tests, which include chorionic villus sampling, amniocentesis, and percutaneous umbilical blood sampling. While these procedures are about 98% to 99% accurate in their detection of Down syndrome there is an increased risk of miscarriage because these tests are performed inside the uterus. Because of this risk, they are recommended primarily for women over the age of 35.

For genetic counseling, there is no possible way to stop Down syndrome from...
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