What is the primary instruction the nurse should prioritize when teaching a prenatal class about breast care?

The primary instruction regarding breast care during pregnancy emphasizes washing the nipples with clean water only. This practice is essential because it helps maintain the natural oils and flora of the skin, which are important for protecting the nipples from irritation and infection. The use of soap can disrupt the skin's natural barrier and may lead to dryness or irritation, which is counterproductive.

During pregnancy, as the body undergoes various changes, the nipples can become sensitive and may require gentle care. Washing with clean water is sufficient to keep them clean without causing unnecessary irritation. Encouraging this approach can help expectant mothers maintain breast health and prepare for breastfeeding without introducing products that could harm the delicate skin of the nipples.

While moisturizing creams, ointments, and other products might seem beneficial, they are not the primary recommendation because excessive application can lead to build-up, which could further irritate the skin instead of providing the intended relief. Therefore, emphasizing the use of clean water aligns with best practices in prenatal care.