Naegele's rule


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Noun1.Naegele's rule - rule for calculating an expected delivery date; subtract three months from the first day of the last menstrual period and add seven days to that date
principle, rule - a rule or law concerning a natural phenomenon or the function of a complex system; "the principle of the conservation of mass"; "the principle of jet propulsion"; "the right-hand rule for inductive fields"
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Now known as Naegele's rule, this remains the standard by which most U.
For example, if a patient is two weeks beyond Naegele's rule for a due date, [the obstetrician] might induce labor for post-maturity" without realizing the infant is actually only a week overdue.