A nurse is caring for an infant who is dehydrated and requires IV therapy. The nurse should monitor the infant's response to therapy by performing which of the following actions?

A. Taking the infant's vital signs every 2 hr: Monitoring vital signs every 2 hours can help assess the infant’s general condition and detect changes in heart rate and blood pressure, which can indicate changes in hydration status. However, it might not be sufficient alone to monitor fluid status. B. Counting the number of wet diapers every shift: Tracking the number of wet diapers is an effective way to monitor the infant's fluid output and hydration status. An increase in wet diapers typically indicates improved hydration. This is a practical and non-invasive method for assessing the effectiveness of IV therapy in infants. C. Weighing the infant at the same time every day: Daily weights are a critical measure of fluid balance in infants. A consistent daily weight check provides a direct and accurate assessment of the infant’s hydration status and response to IV therapy. D. Measuring the infant's head circumference twice per day: Measuring head circumference is not relevant for monitoring hydration status. It is typically used to assess growth and development in infants, not fluid balance or response to IV therapy.