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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References in periodicals archive ?
Gestational age based on LMP using Naegele's rule is uncertain in 20%-40% of cases.
Now known as Naegele's rule, this remains the standard by which most U.
The duration of pregnancy is 40 weeks (280) days calculated from the Last Menstrual Period (LMP), according to Naegele's rule.