An IV prescription requires 1,200 mL of fluid to run over 10 hours using tubing with a drop factor of 20 drops/mL. What rate should the nurse set in drops per minute?
Correct answer: B. 40 drops/minute
- A. 30 drops/minute
- B. 40 drops/minute
- C. 50 drops/minute
- D. 60 drops/minute
Explanation
Apply the formula: 1,200 mL × 20 drops/mL ÷ 600 minutes = 40 drops/minute. The 10-hour infusion must first be converted to 600 minutes.
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About Drug Calculations and Dosage
Drug calculations apply measurement systems, unit conversions, dosage formulas, tablet and liquid doses, percentage and ratio strength, and weight based dosing. Work also includes calculating IV flow rates, infusion times and doses for children, while distinguishing the prescribed dose from the available concentration.
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