When administering morphine, how many ml should the nurse give if the prescribed dose is 2 mg and the concentration is 10 mg/mL?

To determine the correct volume of morphine to administer, you need to use the provided information about the concentration of the drug. The concentration states that there are 10 mg of morphine in each milliliter (mL). This implies that for every mL, a nurse can deliver 10 mg of the medication.

Given that the prescribed dose is 2 mg, you can calculate the required volume by setting up a proportion based on the concentration. Since the concentration is 10 mg/mL, you can find out how many mL corresponds to the 2 mg dose:

1. Start with the formula:

Volume (mL) = Desired Dose (mg) / Concentration (mg/mL).

2. Substituting the known values into the formula:

Volume (mL) = 2 mg / 10 mg/mL = 0.2 mL.

Thus, the nurse should administer 0.2 mL of morphine to achieve the prescribed dose of 2 mg. This calculation confirms that administering 0.2 mL is the appropriate action based on the concentration and prescribed dosage.