A client is receiving amikacin at a dose of 0.572 grams per 100 ml. How many ml should the nurse administer if the vial is labeled 250 mg/ml?

To determine how many milliliters the nurse should administer, it is essential to convert the dose of amikacin from grams to milligrams, since the vial is labeled in milligrams. The dose provided is 0.572 grams, and since there are 1,000 milligrams in a gram, this conversion would be calculated as follows:

0.572 grams × 1,000 mg/g = 572 mg.

Next, knowing that the vial contains 250 mg of amikacin per milliliter, the nurse would need to find the volume in milliliters that corresponds to 572 mg. This can be calculated using the following formula:

Volume (ml) = Dose (mg) / Concentration (mg/ml).

Substituting the known values, we have:

Volume (ml) = 572 mg / 250 mg/ml = 2.288 ml.

When rounding to the nearest tenth, this gives approximately 2.3 ml.

Thus, the correct choice indicates that the nurse should administer 2.3 ml of amikacin, ensuring that the prescribed dose is accurately delivered to the client.