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The estimated date of delivery ( EDD ), also known as expected date of confinement, [1] and estimated due date or simply due date, is a term describing the estimated delivery date for a pregnant woman. [2] Normal pregnancies last between 38 and 42 weeks. [3] Children are delivered on their expected due date about 4% of the time.
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 possible in in vitro ...
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 ...
Postterm pregnancy is when a woman has not yet delivered her baby after 42 weeks of gestation, two weeks beyond the typical 40-week duration of pregnancy. [1] Postmature births carry risks for both the mother and the baby, including fetal malnutrition, meconium aspiration syndrome, and stillbirths. [2] After the 42nd week of gestation, the ...
Naegele's rule is a standard way of calculating the due date for a pregnancy when assuming a gestational age of 280 days at childbirth. The rule estimates the expected date of delivery (EDD) by adding a year, subtracting three months, and adding seven days to the origin of gestational age.
The Florida-based OB/GYN explains that, according to the Society of Maternal Fetal Medicine and the American College of Obstetricians and Gynecologists (ACOG), the optimal time to give birth is ...
Traditional East Asian age reckoning covers a group of related methods for reckoning human ages practiced in the East Asian cultural sphere, characterized by counting inclusively from 1 at birth and increasing at each New Year instead of each birthday. Ages calculated this way are always 1 or 2 years greater than those calculated solely by ...
A donor offspring, or donor conceived person, is conceived via the donation of sperm ( sperm donation) or ova ( egg donation ), or both (either from two separate donors or from a couple). For donor conceived people, the biological parent (s) who "donated" sperm or eggs (though most commonly "donors" are financially compensated so "donor", while ...