In a febrile child with tachycardia, what is a prudent initial assessment step?

• A. Evaluate hydration status and treat dehydration.
• B. Check for congenital heart disease.
• C. Administer antibiotics immediately.
• D. Sedate the patient.

Answer: (A)

When a febrile child has tachycardia, the most important first step is to assess hydration status and begin rehydration if dehydration is present. Fever itself can raise heart rate, but dehydration reduces circulating volume and makes tachycardia worse as the body attempts to maintain perfusion. Quick bedside signs of dehydration—dry mucous membranes, skin turgor, capillary refill, tears, urine output—guide whether oral rehydration is sufficient or IV fluids are needed. Mild dehydration can often be managed with oral rehydration solutions and careful monitoring, while moderate to severe dehydration or inability to maintain fluids requires isotonic IV fluids to restore volume. Addressing hydration early often improves tachycardia and overall stability, while antibiotics or other interventions should be guided by the clinical picture after hydration is underway. Sedation is not indicated for this scenario.