Anatomy and Physiology of Pregnancy Related

Review Anatomy and Physiology of Pregnancy related questions and content

The maternity nurse understands that vascular volume increases 40% to 45% during pregnancy to:

  • A. compensate for decreased renal plasma flow.
  • B. provide adequate perfusion of the placenta
  • C. eliminate metabolic wastes of the mother.
  • D. prevent maternal and fetal dehydration.
Correct Answer: B

Rationale: The correct answer is B because the increased vascular volume during pregnancy is essential to provide adequate perfusion of the placenta, ensuring proper nutrient and oxygen exchange between the mother and fetus. This is crucial for the optimal growth and development of the fetus.

A: The increased vascular volume during pregnancy does not compensate for decreased renal plasma flow but rather supports the increased metabolic demands of pregnancy.
C: The elimination of metabolic wastes of the mother is primarily carried out by the kidneys and liver, not solely through increased vascular volume.
D: Preventing maternal and fetal dehydration is more related to adequate fluid intake and retention, rather than the increase in vascular volume during pregnancy.