A nurse in an urgent care clinic is caring for an infant who presents with vomiting, diarrhea, and decreased oral intake. Which of the following manifestations should the nurse expect?

Rationale: A. Hypertension: Dehydration in infants typically causes hypotension, not hypertension, due to reduced circulating volume and poor perfusion as fluid loss progresses. B. Decreased temperature: While temperature may fluctuate in dehydration, fever is more common due to infection-related fluid loss. A decreased temperature is not a consistent sign. C. Oliguria: Decreased urine output is a key indicator of dehydration in infants. The kidneys conserve water during hypovolemia, resulting in oliguria (less than 1 mL/kg/hr). D. Bulging anterior fontanel: A bulging fontanel usually indicates increased intracranial pressure, not dehydration. Dehydration typically causes a sunken fontanel in infants.