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A vanishing twin, also known as twin resorption, is a fetus in a multigestation pregnancy that dies in utero and is then partially or completely reabsorbed. [ 1 ] [ 2 ] In some instances, the dead twin is compressed into a flattened, parchment-like state known as fetus papyraceus .
Both twins born vaginally – this can occur both presented head first or where one comes head first and the other is breech and/or helped by a forceps/ventouse delivery; One twin born vaginally and the other by caesarean section. If the twins are joined at any part of the body – called conjoined twins, delivery is mostly by caesarean section.
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.
The presence of a "T-sign" at the inter-twin membrane-placental junction is indicative of monochorionic-diamniotic twins (that is, the junction between the inter-twin membrane and the external rim forms a right angle), whereas dichorionic twins present with a "lambda (λ) sign" (that is, the chorion forms a wedge-shaped protrusion into the ...
The acardiac twin is a parasitic twin that fails to properly develop a heart, and therefore generally does not develop the upper structures of the body. The parasitic twin, little more than a torso with or without legs, receives its blood supply from the host twin by means of an umbilical cord-like structure (which often only has two blood vessels, instead of three), much like a fetus in fetu ...
“A double cervix or double uterus is way under 1%, maybe three per 1,000 women might have that,” Dr. Richard Davis, who specializes in high-risk pregnancies, explained.
A spontaneous vaginal delivery (SVD) occurs when a pregnant woman goes into labor without the use of drugs or techniques to induce labor and delivers their baby without forceps, vacuum extraction, or a cesarean section. [1] An induced vaginal delivery is a delivery involving labor induction, where drugs or manual techniques are used to initiate ...
Studies from 2000 to 2006 estimated the procedure-related pregnancy loss at 0.6-0.86%. [34] [35] The most recent systematic review of the literature and updated meta-analysis on the risk of pregnancy loss following amniocentesis was published in 2019. This study cites the amniocentesis-related pregnancy loss to be 0.30% (95% CI, 0.11–0.49%). [36]