To reassure and educate pregnant clients about changes in the uterus, nurses should be aware that:
a. Lightening occurs near the end of the second trimester as the uterus rises into a different position.
b. The woman's increased urinary frequency in the first trimester is the result of exaggerated uterine antireflexion caused by softening.
c. Braxton Hicks contractions become more painful in the third trimester, particularly if the woman tries to exercise.
d. The uterine souffle is the movement of the fetus.
ANS: B
The softening of the lower uterine segment is called Hegar's sign. Lightening occurs in the last 2 weeks of pregnancy, when the fetus descends. Braxton Hicks contractions become more defined in the final trimester but are not painful. Walking or exercise usually causes them to stop. The uterine souffle is the sound made by blood in the uterine arteries; it can be heard with a fetal stethoscope.
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