Module 4 Unit A Practice Questions

Question 1

A person presents for prenatal care and provides a last menstrual period date that would make the person 15 weeks’ gestation. What should the clinician do first regarding setting the person’s estimated date of birth?

Answer 1

Ask the person how certain they are about that date and about regularity of cycles.

[Although a dating US may be indicated, you would first want to gather information as an US may not be necessary to date the pregnancy with a sure LMP, regular cycles, etc. and objective data to support the subjective data.]

Question 2

When the clinician sets an EDB for a patient who presents for care in the second trimester, which of these findings should the clinician use to corroborate the EDB? [select all that apply]

a) timing of first movement (quickening), if it has happened
b) dates of any positive pregnancy tests
c) fundal height

Answer 2

a) timing of first movement (quickening), if it has happened
b) dates of any positive pregnancy tests
c) fundal height

Question 3

In dating ultrasounds performed at 10 weeks, which fetal structures are included in the measurements?

Answer 3

Crown-rump length

Question 4

To date a pregnancy at 16 weeks, which fetal structures will the sonographer measure? [select all that apply]

a) Crown-rump length
b) Biparietal diameter
c) Head circumference
d) Abdominal circumference
e) Femur length

Answer 4

b) Biparietal diameter
c) Head circumference
d) Abdominal circumference
e) Femur length

Question 5

A person’s LMP-based due date is January 7.

An ultrasound measures the fetus as 14 weeks and gives a due date of January 16.

Which date should the clinician use?

Answer 5

Ultrasound date

Question 6

A person’s LMP-based due date is July 11.

An ultrasound measures the fetus as 19 weeks and gives a due date of July 5.

Which date should the clinician use?

Answer 6

LMP-based date