Question

A nurse practitioner prepares an injection of promethazine, an antihistamine used to treat allergic rhinitis. If the stock bottle is labeled 30.mg/mL and the order is a dose of 10.0mg, how many milliliters will the nurse draw up in the syringe?

Answer 1

To determine the number of milliliters the nurse practitioner needs to draw up in the syringe, we can use the formula: Volume = Dose / Concentration. In this case, the dose is 10.0mg and the concentration is 30mg/mL. So, the nurse practitioner should draw up 0.333mL in the syringe.

Step-by-step explanation:

To determine the number of milliliters the nurse practitioner needs to draw up in the syringe, we can use the formula:

Volume = Dose / Concentration

In this case, the dose is 10.0mg and the concentration is 30mg/mL. Plugging in these values, we get:

Volume = 10.0mg / 30mg/mL = 0.333mL

To determine the number of milliliters the nurse practitioner needs to draw up in the syringe, we can use the formula:

Volume = Dose / Concentration

So, the nurse practitioner should draw up 0.333mL in the syringe.

Answer 2

With a dose order of 10mg and the stock bottle being labeled 30mg/mL, the nurse will need to draw up .33mL. We come to this answer by taking the dose order of 10mg and multiplying by the stock bottle amount of 1mL/30mg. The 30mg/mL was inverted to account for units so that mg cancels out and we are left with mL answer.
Total mL needed = 10mg * (1mL/30mg) = .33mL