A nurse is caring for an infant who weighs 7.8 kg (17.2 lb) and was admitted yesterday for treatment of moderate dehydration. Which of the following findings indicates to the nurse that the infant's condition is improving?

A. Maculopapular skin burrows on the hand. Correct. Scabies is characterized by burrows in the skin, often seen as small, wavy, thread-like lesions, commonly found on the hands, between fingers, and on wrists.

B. Scaly lesions on the inner thighs. Incorrect. While scaly lesions can be present in various skin conditions, they are not typical of scabies.

C. Bull's eye edematous area on the groin. Incorrect. This description is more characteristic of Lyme disease, not scabies.

D. Rash with red macular lesions on the scalp. Incorrect. Scabies does not typically affect the scalp, especially in older children and adults.

A. Respiratory rate 70/min: A respiratory rate of 70/min is high for an infant and may indicate ongoing respiratory distress or other issues. Normal respiratory rates for infants are generally 30-60 breaths per minute. This does not indicate improvement.

B. Capillary refill is greater than 3 seconds. Capillary refill time greater than 3 seconds indicates poor perfusion, which can be a sign of continued dehydration or shock. This does not indicate improvement.

C. Dry mucous membranes: Dry mucous membranes are a sign of dehydration. For an infant's condition to be improving, mucous membranes should be moist.

D. Fontanelle is level and soft. A level and soft fontanelle indicates that the infant is likely well-hydrated. Sunken fontanelles are a sign of dehydration, so this finding suggests improvement in the infant’s hydration status.