A nurse is assisting with the admission of an infant who has experienced vomiting and loose, watery stools for the past 3 days. Which of the following findings indicates that the child is experiencing moderate dehydration?

A. Anuria: Anuria, or the absence of urine output, indicates severe dehydration or acute renal failure rather than moderate dehydration. Moderate dehydration usually presents with decreased but not absent urine output, as the body still tries to conserve fluids. B. A 7% weight loss from baseline: A weight loss of 6% to 9% of body weight is consistent with moderate dehydration in infants and children. This measurable sign is a critical and objective indicator used to assess the severity of dehydration, particularly following prolonged vomiting or diarrhea. C. Hyperpnea: Hyperpnea, or abnormally deep and rapid breathing, can be seen in cases of severe dehydration or metabolic acidosis. It is not a classic finding of moderate dehydration, where respiratory patterns are usually normal or only mildly affected. D. Lethargy: Lethargy typically suggests severe dehydration rather than moderate. In moderate dehydration, the infant may be irritable or thirsty but usually maintains normal mental status without profound decreases in responsiveness or alertness.