A preparing to administer vancomycin 500 mg via intermittent IV bolus to a client. Available is vancomycin powder for injection 1 g vial. The nurse reconstitutes the powder for a final concentration of vancomycin 5 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["100"]
Determine the desired dosage:
The nurse needs to administer 500 mg of vancomycin.
Determine the volume per dose:
The concentration of the vancomycin solution is 5 mg/mL.
The nurse needs to administer 500 mg per dose.
To find the volume per dose, we can set up a proportion:
5 mg / 1 mL = 500 mg / x mL
Cross-multiplying gives us:
5x = 500
Dividing both sides by 5, we get:
x = 100 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Take 0.5 oz 30 minutes before meals and at bedtime:
The unit "oz" (ounce) is not a metric unit. Ounces are part of the imperial measurement system, not the metric system. The metric equivalent of ounces for liquid measurements would be milliliters (mL). Therefore, this prescription is using an imperial unit.
B. Take 1 tsp four times daily:
The unit "tsp" stands for teaspoon, which, although used in common medical practice, is not a metric unit. A teaspoon is a unit of volume in the U.S. customary system, equivalent to approximately 5 mL in the metric system. However, teaspoons themselves are not part of the metric system, so this instruction is not using a metric unit.
C. Take 2 drops four times daily:
The unit "drops" is a non-metric unit of measurement and is used to describe small volumes of liquid, often in medication dosages. While the exact volume of a drop can vary depending on the liquid and dropper, it is not a metric measurement.
D. Take 15 mL, 1 hr after meals and at bedtime:
The unit "mL" stands for milliliters, which is a metric unit of volume. The prescription specifically uses the metric system for dosage measurement, making it the correct option. Milliliters are the standard unit for measuring liquid medications in the metric system.
Correct Answer is ["0.5"]
Explanation
Determine the desired dosage:
The nurse needs to administer 20 mg of quinapril.
Determine the number of tablets per dose:
Each tablet contains 40 mg of quinapril.
The nurse needs to administer 20 mg per dose.
To find the number of tablets per dose:
40 mg / 1 tablet = 20 mg / x tablets
Cross-multiplying gives us:
40x = 20
Dividing both sides by 40, we get:
x = 0.5 tablets
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