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- Selective reduction is the practice of reducing the number of fetuses in a multiple pregnancy, such as quadruplets, to a twin or singleton pregnancy. The procedure is also called multifetal pregnancy reduction. The procedure is most commonly done to reduce the number of fetuses in a multiple pregnancy to a safe number, when the multiple pregnancy is the result of use of assisted reproductive technology; outcomes for both the mother and the babies are generally worse the higher the number of fetuses. The procedure is also used in multiple pregnancies when one of the fetuses has a serious and incurable disease, or in the case where one of the fetuses is outside the uterus, in which case it is called selective termination. The procedure generally takes two days; the first day for testing in order to select which fetuses to reduce, and the second day for the procedure itself, in which potassium chloride is injected into the heart of each selected fetus under the guidance of ultrasound imaging. Risks of the procedure include bleeding requiring transfusion, rupture of the uterus, retained placenta, infection, a miscarriage, and prelabor rupture of membranes. Each of these appears to be rare. Selective reduction was developed in the mid-1980s, as people in the field of assisted reproductive technology became aware of the risks that multiple pregnancies carried for the mother and for the fetuses. (en)
- 減数手術（げんすうしゅじゅつ）は、多胎妊娠した場合、妊娠初期に一部の胎児を妊娠中絶する手術。減胎手術とも言う。妊娠12週までに行われる。 減数手術については、対象の選択、母児の身体的、心理的問題に関する検討が十分ではなく、また法的問題のみならず胎児の生命に対する倫理的問題もあり、社会的合意が得られていないため、その是非に一定の方向が示されていない。 (ja)
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- 11436 (xsd:nonNegativeInteger)
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- 減数手術（げんすうしゅじゅつ）は、多胎妊娠した場合、妊娠初期に一部の胎児を妊娠中絶する手術。減胎手術とも言う。妊娠12週までに行われる。 減数手術については、対象の選択、母児の身体的、心理的問題に関する検討が十分ではなく、また法的問題のみならず胎児の生命に対する倫理的問題もあり、社会的合意が得られていないため、その是非に一定の方向が示されていない。 (ja)
- Selective reduction is the practice of reducing the number of fetuses in a multiple pregnancy, such as quadruplets, to a twin or singleton pregnancy. The procedure is also called multifetal pregnancy reduction. The procedure is most commonly done to reduce the number of fetuses in a multiple pregnancy to a safe number, when the multiple pregnancy is the result of use of assisted reproductive technology; outcomes for both the mother and the babies are generally worse the higher the number of fetuses. The procedure is also used in multiple pregnancies when one of the fetuses has a serious and incurable disease, or in the case where one of the fetuses is outside the uterus, in which case it is called selective termination. (en)
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- 減数手術 (ja)
- Selective reduction (en)
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