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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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Free Nursing Study Resources

Correct Answer is D

Explanation

Choice A reason: This is incorrect because spironolactone does not affect the heart rate. Checking the heart rate before each dose is not necessary.

Choice B reason: This is incorrect because spironolactone does not interact with acetaminophen. Taking acetaminophen with spironolactone will not cause bleeding.

Choice C reason: This is incorrect because spironolactone does not cause dry cough or increase blood sugar. These are not signs of adverse effects of spironolactone.

Choice D reason: This is correct because spironolactone can cause hyperkalemia, which is a high level of potassium in the blood. Bananas, cantaloupe, and spinach are high-potassium foods that should be avoided by clients taking spironolactone.

Correct Answer is ["0.4"]

Explanation

Given:

Enoxaparin dose: 40 mg

Available concentration: 100 mg/mL

Step 1: Calculate the volume of enoxaparin to be administered in mL

Volume = Enoxaparin dose / Concentration

Volume = 40 mg / 100 mg/mL

Volume = 0.4 mL

Rounding to the nearest tenth:

Volume = 0.4 mL

Therefore, the nurse should administer 0.4 mL of enoxaparin subcutaneously for the prevention of deep vein thrombosis.

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Naxlex Comprehensive Predictor Exams

What patient education should be given to a client going home with a new prescription for the potassium-sparing diuretic spironolactone?

Correct Answer is D

Explanation

A nurse is preparing to administer enoxaparin 40 mg subcutaneous for prevention of deep vein thrombosis. Available is enoxaparin 100 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["0.4"]

Explanation

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