出典:Wikipedia
出典:『Wikipedia』 (2011/08/01 06:30 UTC 版)
Selective reduction (or fetal reduction) is the practice of reducing the number of fetuses in a multifetal pregnancy (those involving more than one fetus). Such an abortion procedure is often performed after a congenital defect has been identified. Prenatal diagnostic testing may determine that some fetuses have chromosomal defects or a greater chance of genetic diseases, and those fetus(es) are then targeted in selective reduction.