A nurse is providing discharge teaching to the parent who is prescribed diphenhydramine 25mg elixir every 4hr as needed. The amount available is diphenhydramine elixir 12.5mg/5 mL. How many mL should the nurse administer per dose?
To determine the mL that the nurse should administer per dose, you need to calculate the volume of the elixir that contains 25mg of diphenhydramine.
Given that the diphenhydramine elixir is 12.5mg/5mL, you can set up a proportion to find the answer:
12.5mg / 5mL = 25mg / x mL
Cross-multiplying, you get:
12.5mg * x mL = 25mg * 5mL
12.5x = 125
Dividing both sides by 12.5, the x mL term can be isolated:
x mL = 125 / 12.5
x mL = 10
Therefore, the nurse should administer 10 mL per dose.