A physician has ordered 0.50 mg of atropine, intramuscularly. If atropine were available as 0.25 mg mL of solution, how many milliliters would you need to give?

Question

Express the volume in milliliters to two significant figures.

Answer 1

To find the volume of solution needed, we can use the following formula:

Volume (mL) = Desired dose (mg) / Concentration (mg/mL)

In this case, the desired dose is 0.50 mg and the concentration is 0.25 mg/mL. Plugging these values into the formula, we get:

Volume (mL) = 0.50 mg / 0.25 mg/mL = 2 mL

Therefore, you would need to administer 2 mL of the solution to deliver 0.50 mg of atropine intramuscularly.