You have a prescription for 10 mg of a medication. The medication is available in 20 mg tablets. Using the desired over have formula, how many tablets should you administer?
1 tablet
0.5 tablets
2 tablets
1.5 tablets
The Correct Answer is B
Calculation:
Ordered Dose: 10 mg
Available Tablet Strength: 20 mg/tablet
- Calculate the number of tablets using the desired over have formula
Number of Tablets = Desired Dose ÷ Have
Number of Tablets = 10 ÷ 20
Number of Tablets = 0.5 tablets
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Calculation:
Ordered Dose: 40 mg
Available Concentration: 10 mg/mL
- Set up dimensional analysis
Formula: Volume to administer = (Ordered Dose × Conversion Factor)
Conversion Factor = 1 mL ÷ 10 mg
- Perform the calculation
Volume to administer = 40 × (1 ÷ 10)
Volume to administer = 4 mL
Correct Answer is B
Explanation
Calculation:
Available Concentration: 500 mg/2 mL
Ordered Dose: 750 mg
- Calculate the volume to administer
Volume to administer = (Ordered Dose ÷ Concentration) × Volume of Concentration
Volume to administer = (750 ÷ 500) × 2
Volume to administer = 1.5 × 2
Volume to administer = 3 mL
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