A nurse is assessing a client during her first prenatal visit. The client reports March 20 as her last menstrual period.
Use Naegele's rule to calculate the estimated date of delivery.
(Use the MMDD format with four numerals and no spaces or punctuation: MMDD.)
The Correct Answer is ["1227"]
Naegele’s rule is a method for estimating the due date of a baby based on the woman’s last menstrual period (LMP).
It involves adding seven days and subtracting three months from the first day of the LMP.
It assumes a 28-day menstrual cycle and a 280-day gestation period, which may vary for different women 1.
Using this rule, if the client’s last menstrual period was March 20, then adding seven days would give March 27.
Subtracting three months would give December 27 of the previous year.
Adding one year would give December 27 of the current year, which is the estimated date of delivery in MMDD format: 1227.
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Related Questions
Correct Answer is B
Explanation
Nägele’s Rule is a method for estimating the expected date of delivery (EDD) or confinement (EDC).
It involves adding seven days and one year, and subtracting three months, from the first day of the last menstrual period (LMP)1.
Using this rule, if the first day of the client’s last menstrual period was July 28th, then adding seven days would be August 4th.
Subtracting three months would be May 4th.
Adding one year would be May 4th of the following year.
Therefore, the nurse should document May 5th as the client’s expected delivery date.
Choice A is incorrect because April 21st is too early according to Nägele’s Rule calculation.
Choice C is incorrect because May 21st is too late according to Nägele’s Rule calculation.
Choice D is incorrect because April 4th is too early according to Nägele’s Rule calculation.
Correct Answer is A
Explanation
The nurse should inform the client that amniocentesis is a procedure that
determines if the baby has genetic or congenital disorders.

Choice B is not the best answer because amniocentesis is typically performed after 15 weeks of gestation.
Choice C is not the best answer because chorionic villus sampling (CVS) is a different procedure from amniocentesis.
Choice D is not the best answer because there is no age restriction for having an amniocentesis.
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