The nurse is caring for a patient who is ordered to take nothing by mouth. The patient weighs 65 kg. What volume of intravenous fluid should this patient receive in 24 hours?
a. 2225 mL
b. 2400 mL
c. 2520 mL
d. 2640 mL
ANS: C
Fluid maintenance needs for the NPO patient are calculated as 4 mL/kg/h for the first 10 kg of weight, 2 mL/kg/h for the second 10 kg of weight, and 1 mL/kg/h for every kg of weight thereafter. This patient's fluid needs are (10 kg ? 4 mL) + (10 kg ? 2 mL) + (45 kg ? 1 mL) = 105 mL/h. The 24-hour total is 105 mL/h ? 24 h = 2,520 mL.
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