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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. Timeline of human prenatal development - Wikipedia

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

    The features are consistent with a developmental age of seven weeks (reckoned as the ninth week of pregnancy). Week 8. Gestational age: 7 weeks and 0 days until 7 weeks and 6 days old. 50–56 days from last menstruation. Embryonic age: Week nr 6. 5 weeks old. 36–42 days from fertilization. The embryo measures 13 mm (1 ⁄ 2 in) in length.

  4. Age and female fertility - Wikipedia

    en.wikipedia.org/wiki/Age_and_female_fertility

    Age and female fertility. Female fertility is affected by age and is a major fertility factor for women. A woman's fertility is in generally good quality from the late teens to early thirties, although it declines gradually over time. [1] Around 35, fertility is noted to decline at a more rapid rate. [1] At age 45, a woman starting to try to ...

  5. Pregnancy - Wikipedia

    en.wikipedia.org/wiki/Pregnancy

    Pregnancy usually occurs by sexual intercourse, but can also occur through assisted reproductive technology procedures. A pregnancy may end in a live birth, a miscarriage, an induced abortion, or a stillbirth. Childbirth typically occurs around 40 weeks from the start of the last menstrual period (LMP), a span known as the gestational age.

  6. Advanced maternal age - Wikipedia

    en.wikipedia.org/wiki/Advanced_maternal_age

    Advanced maternal age, in a broad sense, is the instance of a woman being of an older age at a stage of reproduction, although there are various definitions of specific age and stage of reproduction. [1] The variability in definitions is in part explained by the effects of increasing age occurring as a continuum rather than as a threshold effect.

  7. Crown-rump length - Wikipedia

    en.wikipedia.org/wiki/Crown-rump_length

    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).

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