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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.
An estimated due date is given by Naegele's rule. According to the WHO, a preterm birth is defined as "babies born alive before 37 weeks of pregnancy are completed." [20] According to this classification, there are three sub-categories of preterm birth, based on gestational age: extremely preterm (fewer than 28 weeks), very preterm (28 to 32 ...
Estimation of due date 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.
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).
Due date for pregnancy calculator - WikipediaA due date for pregnancy calculator is a tool that estimates the date when a pregnant woman is expected to give birth, based on the date of her last menstrual period or the date of conception. The calculator can help plan for prenatal care, monitor the development of the baby, and prepare for labor and delivery. Learn more about how due date for ...
The mother's age is determined by the easily verified date when the pregnancy ends, not by the estimated date of conception. Consequently, the statistics do not include pregnancies that began at age 19, but that ended on or after the woman's 20th birthday. [20]
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