A nurse is preparing to administer sumatriptan 6 mg subcutaneous to a client. Available is sumatriptan injection 6 mg/0.5 mL. How many mL should the nurse administer? (Round off the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.5"]
Determine the desired dosage:
The nurse needs to administer 6 mg of sumatriptan.
Determine the volume per dose:
The sumatriptan injection contains 6 mg per 0.5 mL.
The nurse needs to administer 6 mg per dose.
To find the volume per dose, we can set up a proportion:
6 mg / 0.5 mL = 6 mg / x mL
Cross-multiplying gives us:
6x = 3
Dividing both sides by 6, we get:
x = 0.5 mL
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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 ["1.8"]
Explanation
Convert the client's weight from pounds to kilograms:
There are 2.205 pounds in 1 kilogram.
154 lb = 154 lb / 2.205 lb/kg = 70 kg (rounded to the nearest whole number).
Determine the total dosage:
The client is prescribed 1 mg/kg of gentamicin.
The client weighs 70 kg.
The total dosage is 1 mg/kg x 70 kg = 70 mg.
Determine the volume per dose:
The gentamicin solution contains 40 mg per 1 mL.
The nurse needs to administer 70 mg per dose.
To find the volume per dose:
40 mg / 1 mL = 70 mg / x mL
Cross-multiplying gives us:
40x = 70
Dividing both sides by 40, we get:
x = 1.75 mL
Round the answer to the nearest tenth:
Rounding 1.75 to the nearest tenth gives us 1.8 mL.
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