Final answer:
During breastfeeding, the primary aspect a nurse assesses is the latch and suckling of the newborn, as successful breastfeeding is vital for the infant's nutrition.
Step-by-step explanation:
If breastfeeding, the nurse assesses the latch and suckling of the newborn. This is because the process of lactation is crucial for the newborn's nutrition and growth. Lactation begins during pregnancy, with the development of lactiferous ducts and alveoli, and the production of colostrum. Hormones like prolactin stimulate the growth of milk-secreting structures, while the baby's suckling post-birth triggers the release of oxytocin, causing myoepithelial cells to squeeze milk from the alveoli.
The composition of breast milk changes as needed by the newborn: colostrum in the early days provides important immunoglobulins for immune defense, and milk changes in nutrient composition during a feeding, from foremilk to hindmilk, to quench thirst initially and then to satisfy appetite.
Therefore, when assessing breastfeeding, a nurse would not need to focus on the mother's formula preparation techniques, the newborn's diaper changing schedule, or the mother's emotional well-being as primary concerns but instead should ensure proper breastfeeding techniques like latch and suckling, which are key for effective breastfeeding and nutrition.