Question

A nurse is preparing to administer diphenhydramine 25 mg IV bolus stat. Available is diphenhydramine injection 50 mg/ml. How many ml should the nurse administer?

Answer 1

The nurse should administer 0.5 ml of diphenhydramine 50 mg/ml to deliver a stat dose of 25 mg, using the formula for medication dosage calculation.

Step-by-step explanation:

The question pertains to a medication dosage calculation, which is a common task performed by nurses. To calculate the correct volume of the diphenhydramine injection to administer, you should use the formula:

Volume to administer (ml) = Dose ordered (mg) / Concentration of available medication (mg/ml)

In this case:

Volume to administer (ml) = 25 mg / 50 mg/ml

Applying the formula, you get:

Volume to administer (ml) = 0.5 ml

Hence, the nurse should administer 0.5 ml of diphenhydramine 50 mg/ml to deliver a stat dose of 25 mg.