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Twins are by far the most common form of multiple births in humans. The U.S. Centers for Disease Control and Prevention report more than 132,000 sets of twins out of 3.9 million births of all kinds each year, about 3.4%, or 1 in 30. [5] Compared to other multiple births, twin births account for 97% of them in the US. [6]
Triplet and higher multiple births nosedive. In 2004, of the people younger than 35 who gave birth with the help of IVF, 32.7% delivered twins, and 4.9% delivered triplets, according to doctors at ...
This is a list of multiple births, consisting of notable higher order (4+) multiple births and pregnancies. Twins and triplets are sufficiently common to have their own separate articles. With the use of reproductive technology such as fertility drugs and in vitro fertilization (IVF) such births have become increasingly common. This list ...
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
OHSS is characterized as cystic enlargement of the ovaries. Multiple birth is especially deleterious due to compounding risks including premature delivery and low birthweight, pre-eclampisa, and increased risk of neonatal mortality. While triplet births have been declining in ART, multiple births remain over 50% of births from IVF.
In 2001, a case of spontaneous monopaternal superfecundation was reported after a woman undergoing IVF treatments gave birth to quintuplets after only two embryos were implanted. Genetic testing supported that the twinning was not a result of the embryos splitting, and that all five boys shared the same father. [5] [8]
Low birth weight and preterm birth are strongly associated with many health problems, such as visual impairment and cerebral palsy. Children born after IVF are roughly twice as likely to have cerebral palsy. [21] Sperm donation is an exception, with a birth defect rate of almost a fifth compared to the general population. It may be explained by ...
As there is no treatment for triploidy, palliative care is given if a baby survives to birth. If triploidy is diagnosed during the pregnancy, termination is often offered as an option due to the additional health risks for the mother ( pre-eclampsia , a life-threatening condition, or choriocarcinoma , a type of cancer).