Difficulty: Medium
Average Score: 86%
Simulated
A pregnant client reports that her last menstrual period was February 9, 2018. Using Nägele's rule, what will the nurse determine as the estimated date of birth?
Correct answer
D
Rationale
Accurate use of Nägele's rule requires that the woman has a regular 28-day menstrual cycle. To calculate the estimated date of birth, the nurse would subtract 3 months from the first day of the last menstrual period, add 7 days, and then adjust the year as appropriate. First day of last menstrual period: February 9, 2018; subtract 3 months: November 9, 2017; add 7 days: November 16, 2017; and add 1 year, November 16, 2018.