<unk>  is used when a mother is carrying an unsafe or undesirable number of fetuses in a multiple pregnancy, which are common in medically-assisted pregnancies, in order to reduce the number of fetuses to a number that is relatively safe for the mother and the remaining fetuses. It is also used in cases of multiple pregnancy where at least one of the fetuses is implanted outside the uterus to preserve the life of the mother and the fetus in the uterus, and when one or more of the fetuses has a serious and incurable disease. While the data is weak, due to the small sizes of studies and the lack of randomized controlled trials, as of 2017 it appeared that when short term perinatal outcomes in multiple pregnancies reduced to twins are compared to those of non-reduced triplets, there were fewer deaths among the reduced babies, the twins were born later and were less likely to be premature, and had higher birthweight. As of 2017 longterm outcomes were not well understood. A 2015 Cochrane review found no randomized clinical trials to evaluate. Generally<unk>  reduces the risk of preterm birth, leading to better outcomes for both mothers and the newborns. Outcomes Generally<unk>  reduces the risk of preterm birth, leading to better outcomes for both mothers and the newborns. It appears that<unk>  of triplets, where each triplet is in its own placenta, to twins results in a lower risk of preterm birth and does not increase the risk of miscarriage. In triplets where two of the fetuses share a placenta and each has its own amniotic sac, it appears, with less certainty, that there is also a lower risk of preterm birth and no increase in the risk of miscarriage.
Selective reduction
Minimally invasive procedure
Muscle energy technique
Limb-sparing techniques
Abstinence pledge
Dark therapy
Balanced anesthesia
Bloodless surgery