During pregnancy,
A) maternal respiratory rate decreases.
B) maternal blood volume decreases.
C) maternal nutrient requirements decrease significantly.
D) a woman's glomerular filtration rate decreases by 20 percent.
E) maternal tidal volume increases.

Question

Quizplus · Accepted Answer

During pregnancy, the maternal tidal volume increases to meet the increased oxygen demand of the growing fetus. Maternal respiratory rate remains mostly unchanged. Maternal blood volume and nutrient requirements increase during pregnancy, and a woman's glomerular filtration rate actually increases by 50 percent. Therefore, the only correct choice is E, which is opposite to the expected result.

During Pregnancy