A pregnant woman tells the nurse that she takes daily vitamin supplements. Since learning of her pregnancy, she has increased her vitamin A supplement to 1200 RAEs per day. The nurse should
a. confirm that this dose is appropriate during pregnancy.
b. encourage the patient to increase the dose to 1500 RAEs to promote the devel-opment of the central nervous system of the fetus.
c. recommend that the patient reduce the dose to less than 700 RAEs, because high-er doses may be teratogenic.
d. inform the patient that because vitamin A is water soluble, large doses are needed to maintain the vitamin in the system.
C
Vitamin A is highly teratogenic. An excessive intake during pregnancy can cause malformation of the fetal heart, skull, and other structures. Pregnant women should not exceed the upper limit for vitamin A and should not exceed the recommended dietary allowance (RDA).
The dose is not appropriate during pregnancy.
Vitamin A is not water soluble.
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