Which of the following hormones remains elevated in the immediate postpartum period of the breastfeeding woman?
1. Estrogen
2. Progesterone
3. Prolactin
4. Human placental lactogen
3
1. Incorrect. Estrogen and progesterone levels decrease markedly after expulsion of the pla-centa, reaching their lowest levels 1 week into the postpartum period.
2. Incorrect. Estrogen and progesterone levels decrease markedly after expulsion of the pla-centa, reaching their lowest levels 1 week into the postpartum period.
3. Correct. Prolactin levels in blood increase progressively throughout pregnancy. In women who breastfeed, prolactin levels remain elevated into the sixth week after birth.
4. Incorrect. Human placental lactogen levels dramatically decrease after expulsion of the placenta.
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