A nurse is preparing to administer tobramycin 3 mg/kg/day IM in three divided doses to a client who weighs 85 kg. The amount available is Tobramycin 40 mg/mL. How many mL should the nurse administer per dose?
(Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["2.1"]
To calculate the amount of tobramycin that the nurse should administer per dose, we can use the following steps:
Calculate the total daily dosage required based on the client's weight and the prescribed dosage.
Determine the dosage per each of the three divided doses.
Calculate the volume of the drug needed for each dose using the concentration of the available tobramycin solution.
Given:
Client's weight = 85 kg
Prescribed dosage = 3 mg/kg/day
Available concentration of tobramycin = 40 mg/mL
Let's calculate step by step:
Calculate the total daily dosage required:
Total daily dosage = 3 mg/kg/day × 85 kg = 255 mg/day
Determine the dosage per each of the three divided doses:
Dosage per dose = Total daily dosage / 3 = 255 mg / 3 = 85 mg
Calculate the volume of the drug needed for each dose using the concentration of the available tobramycin solution:
Volume of drug per dose = Dosage per dose / Concentration of tobramycin
Volume of drug per dose = 85 mg / 40 mg/mL ≈ 2.1 mL
Rounding to the nearest tenth, the nurse should administer 2.1 mL of the tobramycin per dose.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.71"]
Explanation
To calculate how many milliliters (mL) of the reconstituted medication the nurse should administer, we can use the following formula:
Desired dose (in mg) / Stock concentration (in mg/mL) = Volume to administer (in mL)
Given information:
Desired dose of ceftriaxone: 250 mg
Stock concentration after reconstitution: 350 mg/mL
Now let's calculate the volume to administer:
250 mg / 350 mg/mL = 0.7143 mL
Rounding to the nearest hundredth, the nurse should administer 0.71 mL of the reconstituted medication.
Correct Answer is ["0.75"]
Explanation
To calculate the volume of morphine injection that the nurse should administer, we can use the following steps:
Determine the volume to be administered:
We have a concentration of 10 mg/mL.
7.5 mg ÷ 10 mg/mL = 0.75 mL
Therefore, the nurse should administer 0.75 mL of morphine injection subcutaneously.
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