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  2. Obstetric ultrasonography - Wikipedia

    en.wikipedia.org/wiki/Obstetric_ultrasonography

    In the first trimester, a standard ultrasound examination typically includes: [12] Gestational sac size, location, and number; Identification of the embryo and/or yolk sac; Measurement of fetal length (known as the crown-rump length) Fetal number, including number of amnionic sacs and chorionic sacs for multiple gestations; Embryonic/fetal ...

  3. Gestational sac - Wikipedia

    en.wikipedia.org/wiki/Gestational_sac

    The gestational sac is spherical in shape, and is usually located in the upper part (fundus) of the uterus.By approximately nine weeks of gestational age, due to folding of the trilaminar germ disc, the amniotic sac expands and occupy the majority of the volume of the gestational sac, eventually reducing the extraembryonic coelom (the gestational sac or the chorionic cavity) to a thin layer ...

  4. Obstetrics - Wikipedia

    en.wikipedia.org/wiki/Obstetrics

    The newer integrated screen (formerly called F.A.S.T.E.R for First And Second Trimester Early Results) can be done at 10 plus weeks to 13 plus weeks with an ultrasound of the fetal neck (thicker nuchal skin correlates with higher risk of Down syndrome being present) and two chemicals (analytes), pregnancy-associated plasma protein A and human ...

  5. Confined placental mosaicism - Wikipedia

    en.wikipedia.org/wiki/Confined_placental_mosaicism

    This includes an association between high levels of abnormal cells in placental tissue and concerns with the growth of the baby. However, it is not accurate to use these associations to try to predict pregnancy outcome based on the percent of trisomic cells in a first trimester CVS result. [7]

  6. Chorionic villus sampling - Wikipedia

    en.wikipedia.org/wiki/Chorionic_villus_sampling

    Abnormal first trimester screen results; Increased nuchal translucency or other abnormal ultrasound findings; Family history of a chromosomal abnormality or other genetic disorder; Parents are known carriers for a genetic disorder; Advanced maternal age (maternal age above 35).

  7. Pregnancy - Wikipedia

    en.wikipedia.org/wiki/Pregnancy

    The first trimester includes conception, which is when the sperm fertilizes the egg. The fertilized egg then travels down the fallopian tube and attaches to the inside of the uterus, where it begins to form the embryo and placenta. During the first trimester, the possibility of miscarriage (natural death of embryo or fetus) is at its highest.

  8. Here's what pregnancy actually looks like before 10 weeks ...

    www.aol.com/lifestyle/heres-pregnancy-actually...

    Photos of what pregnancy tissue from early abortions at 5 to 9 weeks actually looks like have gone viral.. The images, which were originally shared by MYA Network — a network of physicians who ...

  9. Medical imaging in pregnancy - Wikipedia

    en.wikipedia.org/wiki/Medical_imaging_in_pregnancy

    Gadolinium contrast agents in the first trimester are associated with a slightly increased risk of a childhood diagnosis of several forms of rheumatism, inflammatory disorders, or infiltrative skin conditions, according to a retrospective study including 397 infants prenatally exposed to gadolinium contrast. [3]

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