What is the initial treatment for mild dehydration in the field?

• A. Intravenous fluids in the field.
• B. NPO and rest.
• C. Oral rehydration with electrolyte solution; treat symptoms.
• D. Antibiotics.

Answer: (C)

Treating mild dehydration in the field relies on rapid, accessible rehydration through the digestive tract. Oral rehydration with an electrolyte solution is the best first choice because the glucose in the solution helps sodium and water absorption in the small intestine, speeding restoration of fluid and electrolyte balance without needing IV access. This approach is practical in austere settings: it’s portable, easy to administer in small sips, and you can continue to address symptoms while fluids are being absorbed. If the patient can keep fluids down, continue oral rehydration and manage any accompanying symptoms (such as mild nausea or abdominal cramps) with supportive care. Escalation to intravenous fluids is reserved for those who cannot tolerate oral intake or who show signs of more severe dehydration or instability. Antibiotics aren’t indicated for dehydration itself, and NPO would unnecessarily restrict fluid intake when rehydration is the goal.