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A nurse is preparing to administer gentamicin 1 mg/kg IM to a client who weighs 154 lb. Available is gentamicin solution 40 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.)
Answer and Explanation

The Correct Answer is ["1.8"]

Step 1: Convert pounds to kilograms.

 

154 lb * (1 kg / 2.20462 lb) = 70 kg

Step 2: Calculate the total dose of gentamicin.

 

1 mg/kg * 70 kg = 70 mg

Step 3: Calculate the volume of gentamicin solution to administer.

 

70 mg / 40 mg/mL = 1.75 mL

Therefore, the nurse should administer 1.8 mL of gentamicin solution.


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Related Questions

Correct Answer is ["0.5"]

Explanation

To calculate the volume to be administered, the nurse should first divide the prescribed dose (100 mg) by the concentration of the available medication (200 mg/5 mL): 100 mg / (200 mg/5 mL) = 2.5 mL. Since there are 5 mL in a teaspoon, the parent should administer 2.5 mL / 5 mL/teaspoon = 0.5 teaspoons per dose.

Correct Answer is ["100"]

Explanation

First, we need to determine how many milligrams of vancomycin are in each milliliter of the reconstituted solution:

1 g = 1,000 mg

If we reconstitute 1 g of vancomycin powder for injection in enough diluent to make a final volume of 200 mL, the concentration will be:

1,000 mg ÷ 200 mL = 5 mg/mL

Now, we can calculate how many milliliters of the reconstituted solution the nurse should administer to deliver 500 mg of vancomycin:

500 mg ÷ 5 mg/mL = 100 mL

Therefore, the nurse should administer 100 mL of the reconstituted vancomycin solution via intermitent IV

bolus.

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