The perinatal nurse teaches the postpartum woman about the normal process of diuresis that she can expect to occur approximately 6 to 8 hours after birth. A decrease in which of the following hormones is primarily responsible for the diuresis?
a. Prolactin
b. Progesterone
c. Oxytocin
d. Estrogen
ANS: d
Maternal diuresis occurs almost immediately after birth and urinary output reaches up to 3000 mL each day by the second to fifth postpartum days. After childbirth, a decrease in the level of estrogen naturally occurs and contributes to the diuresis.
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