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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.
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.
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 ...
Definitions. The management of labor and delivery may vary depending on the gestational age. It is common to encounter the following terms when describing different time periods of pregnancy. Postterm – ≥ 42 weeks + 0 days of gestation (> 293 days from the first day of last menstrual period, or > 13 days from the estimated due date)
Even though premarital sex was somewhat condoned, having a child outside wedlock was not. If a pregnancy resulted from premarital sex, the young couple were expected to marry. Marriage and birth records from the late 1700s reveal that between 30 and 40 percent of New England brides were pregnant before marriage.
Pregnancy rate. Pregnancy rate is the success rate for getting pregnant. It is the percentage of all attempts that leads to pregnancy, with attempts generally referring to menstrual cycles where insemination or any artificial equivalent is used, which may be simple artificial insemination (AI) or AI with additional in vitro fertilization (IVF).
Gestational age: 3 weeks and 0 days until 3 weeks and 6 days old. 22–28 days from last menstruation. Embryonic age: Week nr 2. 1 week old. 8–14 days from fertilization. Trophoblast cells surrounding the embryonic cells proliferate and invade deeper into the uterine lining. They will eventually form the placenta and embryonic membranes.
Teen births (aged 15–19) per 1,000 people by state (2015) Teenage pregnancy in the United States occurs mostly unintentionally [1] and out of wedlock [2] [3] but has been declining almost continuously since the 1990s. [1] [4] [5] In 2022, the teenage birth rate fell to 13.5 per 1,000 girls aged 15 to 19, the lowest on record. [6]
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