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Because a single placenta has difficulty supporting multiple fetuses, in such cases a selective reduction to improve the likelihood of survival for the remaining fetus or fetuses may be indicated. [1] [2] Selective reduction is the practice of reducing the number of fetuses in a multiple pregnancy, such as quadruplets, to a twin or
Hellin's law, also called Hellin-Zeleny's law, is an empirical observation in demography that the approximate rate of multiple births is one n-tuple birth per 89 n-1 singleton births: twin births occur about once per 89 singleton births, triplets about once per 89 2, quadruplets about once per 89 3, and so on.
A slide hosting service is a website that allows users to upload, view, comment, and share slideshows created with presentation programs.According to Alexa and Compete rankings, the most popular slide hosting services include websites such as SlideShare, [1] MyPlick, [2] Slideboom, [3] SlideServe, [4] SlideWorld [5] and SlidePub.
Women with a multiple pregnancy are also encouraged after 24 weeks to be on bed rest. This recommendation is not a requirement for women with a multiple pregnancy, but it has been used as a method to prevent complications. Some doctors may prescribe this method to be on the safe side and if they believe it is necessary.
A "nulligravida" is a female who has never been pregnant. A "primigravida" is a female who is pregnant for the first time or has been pregnant once. A "multigravida" or "secundigravida" is a female who has been pregnant more than once. Terms such as "gravida 0", referring to a nulligravida, "gravida 1" for a primigravida, and so on, can also be ...
The babies' weights ranged from 1.45 to 2.8 kilograms (3.2 to 6.2 lb). The mother took fertility drugs in order to produce a son, since she already had three daughters. [121] [122] The McGhee septuplets (born 9 June 2010, in Columbus, Ohio) were born to Mia and Rozonno McGhee at 27 weeks. One girl was stillborn.
Twin-to-twin transfusion syndrome (TTTS), also known as feto-fetal transfusion syndrome (FFTS), twin oligohydramnios-polyhydramnios sequence (TOPS) and stuck twin syndrome, is a complication of monochorionic multiple pregnancies (the most common form of identical twin pregnancy) in which there is disproportionate blood supply between the fetuses.
Gestation is the period of development during the carrying of an embryo, and later fetus, inside viviparous animals (the embryo develops within the parent). [1] It is typical for mammals, but also occurs for some non-mammals. Mammals during pregnancy can have one or more gestations at the same time, for example in a multiple birth. [2]