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  2. Gestational age - Wikipedia

    en.wikipedia.org/wiki/Gestational_age

    Gestational age. In obstetrics, gestational age is a measure of the age of a pregnancy taken from the beginning of the woman's last menstrual period (LMP), [1] or the corresponding age of the gestation as estimated by a more accurate method, if available. Such methods include adding 14 days to a known duration since fertilization (as is ...

  3. Estimated date of delivery - Wikipedia

    en.wikipedia.org/wiki/Estimated_date_of_delivery

    276 days for both ultrasound-estimated and LMP-estimated gestational age in a US study of 1867 singleton live births. [11] 281 days after LMP with a standard deviation of 13 days, was the result of a population-based study of 427,581 singleton births in Sweden.

  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. Pregnancy - Wikipedia

    en.wikipedia.org/wiki/Pregnancy

    Distribution of gestational age at childbirth among singleton live births, given both when gestational age is estimated by first trimester ultrasound and directly by last menstrual period. Roughly 80% of births occur between 37 and 41 weeks of gestational age.

  6. Ballard Maturational Assessment - Wikipedia

    en.wikipedia.org/wiki/Ballard_Maturational...

    The Ballard Maturational Assessment, Ballard Score, or Ballard Scale, is a commonly used technique of gestational age assessment. It was devised by Dr Jeanne L. Ballard, Professor Emeritus of Pediatrics, Obstetrics and Gynecology at the University of Cincinnati College of Medicine. The assessment assigns a score to various criteria, the sum of ...

  7. Timeline of human prenatal development - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_human_prenatal...

    Gestational age: 35 and 0 days until 39 weeks and 6 days old. Embryonic age: Weeks nr 34–38. 33–37 weeks old. The fetus is considered full-term at the end of the 39th week of gestational age. It may be 48 to 53 cm (19 to 21 in) in length. The lanugo is gone except on the upper arms and shoulders. Fingernails extend beyond fingertips.

  8. Gravidity and parity - Wikipedia

    en.wikipedia.org/wiki/Gravidity_and_parity

    Gravidity and parity. In biology and medicine, gravidity and parity are the number of times a female has been pregnant (gravidity) and carried the pregnancies to a viable gestational age (parity). [1] [2] These two terms are usually coupled, sometimes with additional terms, to indicate more details of the female's obstetric history. [3]

  9. Human fertilization - Wikipedia

    en.wikipedia.org/wiki/Human_fertilization

    The resultant age is known as fertilization age, fertilizational age, conceptional age, embryonic age, fetal age or (intrauterine) developmental (IUD) age. Gestational age, in contrast, takes the beginning of the last menstrual period (LMP) as the start point.

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