Question

The physician orders medication A 1.2 g IM every morning. The pharmacy sends medication A, which includes the following instructions on the insert: "Add 12 ml, 6 ml, or 3 ml of diluent to provide 100 mg, 200 mg, or 400 mg per ml, respectively." The nurse adds 3 ml of diluent. How many ml of medication will the nurse administer?

Option A: 4.142
Option B: 1.995
Option C: 3.617
Option D: 5.011

Answer 1

The nurse will administer 3 ml of medication A, since the physician ordered a 1.2 g dose and after adding 3 ml of diluent the concentration is 400 mg/ml.

Step-by-step explanation:

If the nurse adds 3 ml of diluent to medication A, this results in a concentration of 400 mg/ml. The physician has ordered a 1.2 g dose to be administered intramuscularly every morning. To convert the dose from grams to milligrams, we use the conversion factor that 1 gram is equivalent to 1000 milligrams. Therefore, 1.2 g is the same as 1200 mg.

Now, to find out how many ml of medication A needs to be administered, we divide the total dose in milligrams by the concentration of the medication after dilution. By doing this:

1200 mg ÷ 400 mg/ml = 3 ml

Therefore, the nurse will administer 3 ml of medication A.