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miscarriage |
Also found in: Medical, Legal, Wikipedia, Hutchinson | 0.04 sec. |
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miscarriage: see abortion abortion, expulsion of the products of conception before the embryo or fetus is viable. Any interruption of human pregnancy prior to the 28th week is known as abortion. ..... Click the link for more information. . miscarriageor spontaneous abortionSpontaneous expulsion of an embryo or fetus from the uterus before it can live outside the mother. More than 60% are caused by an inherited defect in the fetus, which might result in a fatal abnormality. Other causes may include acute infectious disease, especially if it reduces the fetus's oxygen supply; abnormalities of the uterus that have physical or hormonal origins; and death of the fetus from umbilical-cord knotting. The main sign of impending miscarriage is vaginal bleeding. miscarriage 1. Med spontaneous expulsion of a fetus from the womb, esp prior to the 20th week of pregnancy 2. Brit the failure of freight to reach its destination How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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This information may allow the in vitro fertilization (IVF) specialist to select the best embryos for transfer and avoid those embryos destined to fail to implant, spontaneously abort, or result in abnormal live births. The only way to directly test it would be to compare the ages of women who have children with Down's syndrome and those who spontaneously abort Down's syndrome fetuses," he says. For example, if a recently mated female is caged near a male featuring a slightly different genetic makeup (and thus a slightly different smell) than that of the male she just mated with, she often will spontaneously abort -- a phenomenon called pregnancy block. |
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