When pregnancy has occurred, what is usually used to calculate the expected date of delivery?
A) 8 months from the beginning of the fetal heart beat
B) 8 months from the first sign of movement within the uterus
C) First day of the last menstrual period
D) 266 days from the date of fertilization

Question

Quizplus · Accepted Answer

The expected date of delivery is typically calculated from the first day of the last menstrual period (LMP) using Naegele's rule, which adds 280 days (or 40 weeks) to the LMP.

When Pregnancy Has Occurred, What Is Usually Used to Calculate