In dehydration management, IV fluid resuscitation is indicated in which situation?

• A. In shock or when the child cannot tolerate oral rehydration or has persistent poor perfusion.
• B. For mild dehydration that can be managed at home with oral rehydration.
• C. Only after confirming dehydration with laboratory tests.
• D. After 48 hours of attempting oral rehydration.

Answer: (A)

When managing dehydration in a child, starting IV fluid resuscitation is essential when there is shock or persistent poor perfusion and the child cannot tolerate oral rehydration. In these situations the circulating blood volume is critically low, and rapid restoration with isotonic fluids (like normal saline or lactated Ringer) through IV boluses is needed to revive perfusion and stabilize the child. This approach is about urgency and efficiency: oral rehydration cannot safely and quickly correct severe intravascular volume loss when perfusion is compromised or the child cannot keep fluids down.

For mild dehydration, oral rehydration solutions are preferred and can be managed at home or in the clinic, so IV resuscitation isn’t indicated. Management decisions should be clinical, and waiting for laboratory confirmation isn’t appropriate when there are signs of shock or persistent poor perfusion. Likewise, there’s no need to wait 48 hours to try oral rehydration in a child showing severe dehydration or ongoing poor perfusion; IV resuscitation should be initiated promptly to restore stability.