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The gold standard for diagnosing a heterotopic pregnancy is the transvaginal ultrasound. However, the sensitivity of the transvaginal ultrasound for diagnosing a heterotopic pregnancy has been found to range from 26.3% to 92.4%. [5] Therefore, both clinical symptoms and ultrasound imaging are used to make the diagnosis.
In the absence of ultrasound or hCG assessment, heavy vaginal bleeding may lead to a misdiagnosis of miscarriage. [5] Nausea, vomiting and diarrhea are more rare symptoms of ectopic pregnancy. [5] Rupture of an ectopic pregnancy can lead to symptoms such as abdominal distension, tenderness, peritonism and hypovolemic shock. [5]
[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]
Miscarriage rates among all fertilized zygotes are around 30% to 50%. [1] [7] [60] [123] A 2012 review found the risk of miscarriage between 5 and 20 weeks from 11% to 22%. [157] Up to the 13th week of pregnancy, the risk of miscarriage each week was around 2%, dropping to 1% in week 14 and reducing slowly between 14 and 20 weeks. [157]
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In 1998, an ultrasound study found that the resorption of one or two conceptuses happen in up to 10% of all dog pregnancies, [2] although many cases of assumed complete resorption of an entire litter are likely to have just been the bitch experiencing a pseudopregnancy.
After being separated for five days in the NICU, two premature twins reunited in the most adorable way — with a hug.
Signs and symptoms of pregnancy are common, benign conditions that result from the changes to the body that occur during pregnancy. Signs and symptoms of pregnancy typically change as pregnancy progresses, although several symptoms may be present throughout. Depending on severity, common symptoms in pregnancy can develop into complications ...