A 25-Year-Old Woman in Her Fifth Month of Pregnancy Has

A 25-year-old woman in her fifth month of pregnancy has a blood pressure of 100/70 mm Hg.In reviewing her previous exam,the nurse notes that her blood pressure in her second month was 124/80 mm Hg.In evaluating this change,what does the nurse know to be true?

A) This is the result of peripheral vasodilatation and is an expected change.
B) Because of increased cardiac output,the blood pressure should be higher this time.
C) This is not an expected finding because it would mean a decreased cardiac output.
D) This would mean a decrease in circulating blood volume,which is dangerous for the fetus.