A nurse administers an intravenous fluid order for 1,000 mL over 12 hours. If the infusion is continuous, how many milliliters should be left after 7 hours?

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Multiple Choice

A nurse administers an intravenous fluid order for 1,000 mL over 12 hours. If the infusion is continuous, how many milliliters should be left after 7 hours?

Explanation:
When an IV fluid is given continuously, the amount infused at any time is proportional to the time that has passed. Here, 1000 mL are to be delivered over 12 hours, so the infusion rate is 1000/12 ≈ 83.3 mL per hour. After 7 hours, the amount infused is (1000/12) × 7 = 7000/12 ≈ 583.3 mL. The remaining volume is the total minus what’s already infused: 1000 − 583.3 ≈ 416.7 mL. Rounding to the nearest milliliter gives about 417 mL left.

When an IV fluid is given continuously, the amount infused at any time is proportional to the time that has passed. Here, 1000 mL are to be delivered over 12 hours, so the infusion rate is 1000/12 ≈ 83.3 mL per hour.

After 7 hours, the amount infused is (1000/12) × 7 = 7000/12 ≈ 583.3 mL. The remaining volume is the total minus what’s already infused: 1000 − 583.3 ≈ 416.7 mL. Rounding to the nearest milliliter gives about 417 mL left.

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