Final answer:
Nurses weigh diapers to determine exact urine output in high-risk neonates in order to monitor their fluid intake and hydration status.
Step-by-step explanation:
Nurses weigh diapers in order to determine the exact urine output in high-risk neonates. This procedure is important because neonates have immature kidneys that are inefficient at concentrating urine, resulting in the production of very dilute urine. By weighing the diapers, nurses can measure the amount of urine the neonate is producing and assess their fluid intake and hydration status. This information is crucial for monitoring the health and well-being of the neonate.