Convert 3.9 mg to mcg. Round off to the nearest tenth.
The Correct Answer is ["3900"]
Here's how to convert 3.9mg to mcg:
Conversion factor: 1 milligram (mg) is equal to 1000 micrograms (mcg).
Multiply: 3.9 mg x 1000 mcg/mg = 3900 mcg.
Round off: Rounding to the nearest tenth, we get 3900.0 mcg.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["25"]
Explanation
Here's the step-by-step calculation:
Given information:
Infusion volume: 100 mL
Infusion time: 1 hour (60 minutes)
Drop factor: 15 gtt/mL
Calculate the infusion rate in mL/min:
Divide the infusion volume by the infusion time: 100 mL / 60 min = 1.67 mL/min (rounded to two decimal places).
Calculate the number of drops per minute:
Multiply the infusion rate by the drop factor: 1.67 mL/min x 15 gtt/mL = 25.05 gtt/min.
Round off:
Rounding to the nearest whole number, we get 25 gtt/min.
Correct Answer is ["28"]
Explanation
Let's calculate the IV flow rate step-by-step:
Calculate the total infusion time in minutes:
6 hours x 60 minutes/hour = 360 minutes
Calculate the drops per minute:
Total volume (mL) x Drop factor (gtt/mL) / Infusion time (minutes) = Drops per minute (gtt/min)
1000 mL x 10 gtt/mL / 360 minutes ≈ 27.78 gtt/min
Round to the nearest whole number:
27.78 gtt/min ≈ 28 gtt/min
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