Final answer:
The LPN should ensure adequate folic acid intake to prevent birth defects and support neural tube development in the baby.
Step-by-step explanation:
The LPN should ensure that the patient is receiving adequate folic acid intake. Folic acid is important during pregnancy as it helps prevent certain birth defects, such as spina bifida, and supports the development of the baby's neural tube. It is recommended that women who might become pregnant consume at least 400 µg/day of folate from supplements or fortified foods.