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What Is Trisomy 23
I'm a 36 year old woman pregnant with my first child. My first pregnancy ended in miscarriage - trisomy 23. Should I get a cvs test?
Talk with your OB: The risk for trisomy increases for women over age 35. A number of different chromosomal abnormalities - including different trisomies - can happen at any age. Most often, these cause severe problems and the pregnancy is lost. Rarely a trisomy or other chromosome problem is the result of a rearrangement that one parent silently carries. Be sure show your OB the test results from your miscarriage. ...Read moreGet help from a doctor now ›
Error in formation: Humans have 23 pairs of chromosomes or 46 total. During the formation of the egg, each pair splits and one of each travels to the egg. At conception, the sperm brings one of each & the new embryo now has 23 pairs (two of each). Any time one of the chromosome pairs doesn't split & gives a pair to the egg, a third will come from the sperm and a trisomy of that chromosome is formed. ...Read moreGet help from a doctor now ›
Trisomy 16: Trisomy 16 is a fetus w/ three copies of this chromosome instead of the usual 2. It is responsible for almost 10% of miscarriages in the US. Although full trisomy 16 is not compatible w/ life, there are children born with partial trisomy 16. These children have heart and vascular problems, delayed growth, speech and physical development, reproductive disorders and kidney problems. Trisomy16.org ...Read moreGet help from a doctor now ›
This is complicated.: It's complicated because full trisomy 16 is 99.9% fatal before birth. Newborns with partial trisomy 16 may live - most have multiple birth defects and serious developmental problems. The exact types of birth defects are different depending on what parts of chromosome 16 are duplicated. Your clinical geneticist or genetic counselor can help. You can find a GC here: http://nsgc.org/p/cm/ld/fid=164. ...Read moreGet help from a doctor now ›
Chromosomal tripled: Ordinary chromosomal traits require a pair of chromosomes to determine the traits. Occasionally, as a mistake in cellular division, there is a tripling of one of the chromosomes. When these occur, they usually cause unpleasant, and sometimes deadly conditions in the inheritor of these traits (e.g. Down's). Many we do not know about as they are lethal prior to birth. ...Read moreGet help from a doctor now ›
Trisomy 13: Patau syndrome is also called trisomy 13. It occurs when a baby has 3 copies of the number 13 chromosome instead of the usual 2 copies. It causes severe physical problems and most babies with trisomy 13 die before birth or within the first year after birth. It usually happens because of an accident which occurs when the egg is fertilized, and occurs more commonly as mothers get older. ...Read moreGet help from a doctor now ›
I heard that certain people are more likely to get trisomy number 13 patau syndrome than others, why is that?
Child of older mom: Increasing maternal age increases the risk for chromosome disorders, highlighted by trisomy 21 (down syndrome) but applying to rarer trisomies like the trisomy 13 causing patau syndrome (1 in 8000 births or so). Risks for trisomy increase gradually with maternal age, going from <1 in 2000 under 30 to ~ 1 in 50 over age 40, with age 35 arbitrarily set as high risk (~1 in 200). ...Read moreGet help from a doctor now ›
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