Which IV fluid is used for dehydration according to the protocol described?

Which IV fluid is used for dehydration according to the protocol described?

• A. D51/2NS
• B. D5W
• C. Normal saline
• D. LR

Answer: (A)

The main idea is that dehydration protocols often use a fluid that supplies both free water and calories, while also providing electrolytes to replace losses. D51/2NS fits this goal: the 0.45% saline gives sodium and chloride to help restore electrolyte balance and intravascular volume, while the 5% dextrose is metabolized to free water, delivering energy and helping to correct the overall water deficit without overloading with salt. This combination aligns with a rehydration strategy that needs both water and calories, along with electrolytes. D5W alone would become free water after metabolism and provides no electrolytes or calories, which isn’t ideal for rehydration. Normal saline gives volume and electrolytes but no calories and can lead to more rapid sodium correction if used inappropriately. Lactated Ringer’s offers balanced electrolytes and lactate, but the protocol described uses D51/2NS, likely for its specific sodium and glucose balance suitable to that plan.

The main idea is that dehydration protocols often use a fluid that supplies both free water and calories, while also providing electrolytes to replace losses. D51/2NS fits this goal: the 0.45% saline gives sodium and chloride to help restore electrolyte balance and intravascular volume, while the 5% dextrose is metabolized to free water, delivering energy and helping to correct the overall water deficit without overloading with salt. This combination aligns with a rehydration strategy that needs both water and calories, along with electrolytes.

D5W alone would become free water after metabolism and provides no electrolytes or calories, which isn’t ideal for rehydration. Normal saline gives volume and electrolytes but no calories and can lead to more rapid sodium correction if used inappropriately. Lactated Ringer’s offers balanced electrolytes and lactate, but the protocol described uses D51/2NS, likely for its specific sodium and glucose balance suitable to that plan.