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Mirror syndrome, triple edema or Ballantyne syndrome is a rare disorder affecting pregnant women. It describes the unusual association of fetal and placental hydrops with maternal preeclampsia. [1] The name "mirror syndrome" refers to the similarity between maternal edema and fetal hydrops. It was first described in 1892 by John William ...
[5] Vanishing twin syndrome has been characterized as the loss of a twin before 12 weeks of gestation, or early during the first trimester where it is uncommon for twin pregnancy to have been identified. [6] According to Boklage, most twin pregnancies are ultimately born as singles, and vanished twins are a possible source of abnormal cells. [7]
The sex of the fetus may be discerned by ultrasound as early as 11 weeks' gestation. The accuracy is relatively imprecise when attempted early. [15] [16] [17] After 13 weeks' gestation, a high accuracy of between 99% and 100% is possible if the fetus does not display intersex external characteristics. [18]
Women’s health expert Dr. Jennifer Wider tells Yahoo Life that “weeks 5 to 9 is the early time period in a pregnancy. At 5 weeks, the embryo is a mass of cells with a developing neural tube ...
2 to 4 weeks: 0 to 2 weeks: Miscarriage or none (all or nothing) 50 - 100 [1] 4 to 10 weeks: 2 to 8 weeks: Structural birth defects: 200 [1] Growth restriction: 200 - 250 [1] 10 to 17 weeks: 8 to 15 weeks: Severe intellectual disability: 60 - 310 [1] 18 to 27 weeks: 16 to 25 weeks: Severe intellectual disability (lower risk) 250 - 280 [1]
In anembryonic pregnancy, levels of the pregnancy hormone human chorionic gonadotropin (hCG) typically rise for a time, which can cause positive pregnancy test results and pregnancy symptoms such as tender breasts. [2] [7] Because of the presence of hCG, an ultrasound is typically necessary to diagnose an anembryonic pregnancy. [3]
Although described as "morning sickness," pregnant women can experience this nausea any time of day or night. The exact cause of morning sickness remains unknown. Nausea and vomiting in pregnancy is typically mild and self-limited, resolving on its own by the 14th week of pregnancy. Other causes should also be ruled out when considering treatment.
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.
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