A woman arrives at the clinic for a pregnancy test.The first day of her last menstrual period ( LMP )was February 14,2012.What would be her expected date of birth ( EDB )?

Question

Quizplus · Accepted Answer

Using Nägele's rule,November 21,2012,is the correct expected date of birth.The EDB is calculated by subtracting 3 months from the first day of the LMP and adding 7 days + 1 year to the day of the LMP.Therefore,with an LMP of February 14,2012: February 14,2012 - 3 months = November 14,2011 + 7 days = November 21,2011 + 1 year = November 21,2012.

A Woman Arrives at the Clinic for a Pregnancy Test