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  2. Obstetric ultrasonography - Wikipedia

    en.wikipedia.org/wiki/Obstetric_ultrasonography

    The heartbeat is usually seen on transvaginal ultrasound by the time the embryo measures 5 mm, but may not be visible until the embryo reaches 19 mm, around 7 weeks' gestational age. [5] [11] [12] Coincidentally, most miscarriages also happen by 7 weeks' gestation. The rate of miscarriage, especially threatened miscarriage, drops significantly ...

  3. Gestational sac - Wikipedia

    en.wikipedia.org/wiki/Gestational_sac

    The mean sac diameter [3] can effectively estimate the gestational age [4] between 5 and 6 weeks, with an accuracy of about +/- 5 days. [ 5 ] The yolk sac and embryo should be readily identifiable when the gestational sac reaches a certain size — a yolk sac should be seen when the gestational sac is 20mm and a fetal pole should be seen when ...

  4. Crown-rump length - Wikipedia

    en.wikipedia.org/wiki/Crown-rump_length

    An ultrasound showing an embryo measured to have a crown-rump length of 1.67 cm and estimated to have a gestational age of 8 weeks and 1 day. Crown-rump length ( CRL) is the measurement of the length of human embryos and fetuses from the top of the head (crown) to the bottom of the buttocks (rump). It is typically determined from ultrasound ...

  5. Doppler fetal monitor - Wikipedia

    en.wikipedia.org/wiki/Doppler_fetal_monitor

    See media help. A Doppler fetal monitor is a hand-held ultrasound transducer used to detect the fetal heartbeat for prenatal care. It uses the Doppler effect to provide an audible simulation of the heart beat. Some models also display the heart rate in beats per minute (BPM). Use of this monitor is sometimes known as Doppler auscultation.

  6. Echogenic intracardiac focus - Wikipedia

    en.wikipedia.org/wiki/Echogenic_intracardiac_focus

    Echogenic intracardiac focus ( EIF) is a small bright spot seen in the baby's heart on an ultrasound exam. This is thought to represent mineralization, or small deposits of calcium, in the muscle of the heart. EIFs are found in about 3–5% of normal pregnancies and cause no health problems.

  7. Biophysical profile - Wikipedia

    en.wikipedia.org/wiki/Biophysical_profile

    Biophysical profile. A biophysical profile ( BPP) is a prenatal ultrasound evaluation of fetal well-being involving a scoring system, [ 1] with the score being termed Manning's score.[ 2] It is often done when a non-stress test (NST) is non reactive, or for other obstetrical indications. The "modified biophysical profile" consists of the NST ...

  8. Small for gestational age - Wikipedia

    en.wikipedia.org/wiki/Small_for_gestational_age

    There is an 8.1% incidence of low birth weight in developed countries, and 6–30% in developing countries. Much of this can be attributed to the health of the mother during pregnancy . One third of babies born with a low birth weight are also small for gestational age.

  9. Iowa now bans most abortions after about 6 weeks, before many ...

    www.aol.com/lifestyle/iowa-now-bans-most...

    July 29, 2024 at 11:12 AM. DES MOINES, Iowa (AP) — Iowa’s strict abortion law went into effect Monday, immediately prohibiting most abortions after about six weeks of pregnancy, before many ...