HESI Dosage Calculations Practice Exam 2025 – Complete Prep Resource

Question: 1 / 400

The nurse is preparing to administer 0.25 mg of bumetanide. It is available at 1 mg/4 ml. How many ml should be administered?

0.5 ml

1 ml

To determine the volume in milliliters to administer 0.25 mg of bumetanide when it is available at a concentration of 1 mg in 4 ml, the first step is to establish how many milliliters correspond to the required dose.

Start with the concentration: 1 mg is contained in 4 ml. This means that for every milligram of bumetanide, you are administering 4 ml.

To find out how many milliliters contain 0.25 mg, you can set up a proportion. Since 1 mg is in 4 ml, you can calculate the volume that corresponds to 0.25 mg:

\[

\text{Volume for 0.25 mg} = 0.25 \, \text{mg} \times \frac{4 \, \text{ml}}{1 \, \text{mg}}

\]

This calculation results in:

\[

0.25 \times 4 = 1 \, \text{ml}

\]

Thus, 1 ml of the solution is needed to deliver 0.25 mg of bumetanide. This is why the correct answer is 1 ml.

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2 ml

3 ml

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