Physiological AdaptationQuestion 1018 of 2368
Which change explains the physiologic anemia of pregnancy?
- Red blood cell production stops in early pregnancy.
- Plasma volume increases more than the number of red blood cells.
- The platelet count rises sharply because of hemodilution.
- Iron is lost through increased urine output.
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Correct answer: Plasma volume increases more than the number of red blood cells.
Plasma volume rises by 50%, which dilutes the red blood cells and lowers the hematocrit.
Source: Nursing Health Promotion (Open RN, Chippewa Valley Technical College, 2025), Antepartum Care: Hematologic System Changes During Pregnancy. Licensed under CC BY 4.0.
Practice the topic "Physiological Adaptation"Questions last reviewed: 18 October 2026