A 24-week pregnant woman presents with vaginal bleeding and is diagnosed with placenta previa. Which of the following best explains how this condition affects maternal-fetal interaction?
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ADecreased placental blood flow leading to potential fetal hypoxia
BIncreased production of fetal stress hormones
CDirect compression of the fetal neural tube
DMaternal antibody transfer to the fetal circulation
✓ Correct answer: A. Decreased placental blood flow leading to potential fetal hypoxiaPlacenta previa occurs when the placenta implants over the internal cervical os, which can lead to maternal hemorrhage when the cervix begins to dilate. This condition interferes with maternal-fetal interaction by potentially compromising placental blood flow, which can lead to fetal hypoxia and growth restriction due to decreased nutrient and oxygen exchange.
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