Question

A 39-year-old primigravida thinks that she is about 8 weeks pregnant, although she has had irregular menstrual periods all her life. she has a history of smoking approximately one pack of cigarettes a day, but she tells you that she is trying to cut down. her laboratory data are within normal limits. what diagnostic technique could be used with this pregnant woman at this time?

Answer 1

Determine the average length of her menses and their time of occurrence, or use OB ultrasonographic data of fetal length to approximate fetal age.