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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.)
Answer and Explanation

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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Related Questions

Correct Answer is ["750"]

Explanation

To calculate the infusion rate for the first 8 hours, we can use the following formula:

Infusion rate (mL/hr) = (Volume to be infused / Time for infusion)

First, we need to find the volume to be infused in the first 8 hours:

Volume for the first 8 hours = Total volume / 2 = 12 L / 2 = 6 L = 6000 mL

Now we can calculate the infusion rate for the first 8 hours:

Infusion rate = 6000 mL / 8 hr = 750 mL/hr

Therefore, the nurse should set the IV pump to deliver 750 mL/hr during the first 8 hours.

Correct Answer is ["5"]

Explanation

To calculate the amount of megestrol oral suspension that the nurse should administer, we can use the following formula:

Amount to administer (mL) = (Desired dose in mg) / (Amount of drug in 1 mL)

Given:

Desired dose = 200 mg

Amount of drug in 1 mL = 40 mg/mL

Now, let's calculate the amount to administer:

Amount to administer (mL) = 200 mg / 40 mg/mL

Amount to administer (mL) = 5 mL

Rounding to the nearest whole number, the nurse should administer 5 mL of the megestrol oral suspension.

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