Maternity Nursing: Antepartum Q 49
A nurse is performing an assessment of a primipara who is being evaluated in a clinic during her second trimester of pregnancy. Which of the following indicates an abnormal physical finding necessitating further testing?
A. Consistent increase in fundal height
B. Fetal heart rate of 180 BPM
C. Braxton Hicks contractions
D. Quickening
Correct Answer: B. Fetal heart rate of 180 BPM.
The normal range of the fetal heart rate depends on gestational age. The heart rate is usually 160-170 BPM in the first trimester and slows with fetal growth, near and at term, the fetal heart rate ranges from 120-160 BPM. The other options are expected.
Option A: A fundal height measurement is typically done to determine if a baby is small for its gestational age. The measurement is generally defined as the distance in centimeters from the pubic bone to the top of the uterus. The expectation is that after week 24 of pregnancy the fundal height for a normally growing baby will match the number of weeks of pregnancy — plus or minus 2 centimeters.
Option C: Braxton Hicks contractions are sporadic contractions and relaxation of the uterine muscle. Sometimes, they are referred to as prodromal or “false labor” pains. It is believed they start around 6 weeks gestation but usually are not felt until the second or third trimester of the pregnancy.
Option D: Quickening often occurs between the 16th to the 22nd week of pregnancy. This is called a presumptive sign of pregnancy as the other movements of the woman’s body can mimic early fetal movements such as flatus, peristalsis, and abdominal muscle contractions. A multiparous woman will usually first notice these fluttering movements of the fetus at an earlier gestation than a primiparous woman.