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    Dosage calculation RN Proctored exam herzing university
    Calculation

    Order: Infuse 0.45% NS IV at 75 mL/hr. The tubing has a drop factor of 15 gtt/mL. What is the flow rate in gtt/min? Round to the nearest whole number and enter numeric value only (no commas or labels) ________ gtt/min

    gtt/min

    Explanation & Rationale

    Step 1 is to identify the flow rate in mL/hr and the drop factor Flow rate = 75 mL/hr Drop factor = 15 gtt/mL Step 2 is to calculate the total drops per hour Total drops per hour = mL/hr × drop factor 75 × 15 = 1125 gtt/hr Step 3 is to calculate the drops per minute gtt/min = Total drops per hour ÷ 60 minutes 1125 ÷ 60 = 18.75 gtt/min Step 4 is to round to the nearest whole number 18.75 ≈ 19 Answer: 19

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