A woman's last normal menstrual period began July 4. Using Nägele's rule, what would be her estimated date of delivery?
a. April 1
b. April 11
c. May 11
d. May 29
ANS: B
Using Nägele's rule, add 7 days to the first day of the last menstrual period (LMP) to obtain the day (4 + 7 = 11). To determine the month, subtract 3 from the month of the LMP. (July is the seventh month, so 7 – 3 = 4 [April].) Therefore, the estimated due date is April 11.
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