A nurse is preparing to administer diphenhydramine 35 mg IM. Available is diphenhydramine injection 50 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.7"]
To calculate the dosage of diphenhydramine injection, the nurse should use the formula D/H x Q, where D is the desired dose, H is the dose on hand, and Q is the quantity. In this case, D is 35 mg, H is 50 mg/mL, and Q is 1 mL.
Plugging these values into the formula, we get:
35 mg / 50 mg/mL x 1 mL = 0.7 mL
Therefore, the nurse should administer 0.7 mL of diphenhydramine injection.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1.1"]
Explanation
To calculate the dosage of cefazolin, the nurse needs to use the formula D/H x Q, where D is the desired dose, H is the dose on hand, and Q is the quantity.
In this case, D is 250 mg, H is 225 mg/mL, and Q is 1 mL.
Plugging these values into the formula, we get:
250 mg / 225 mg/mL x 1 mL = 1.11 mL
Therefore, the nurse should administer 1.1 mL of cefazolin IM to the client.
Correct Answer is ["75"]
Explanation
The medication label for amoxicillin powder provides the instructions for reconstituting the oral suspension. The nurse should follow these steps:
- Tap the bottle until all the powder is loose.
- Add about 17 mL of water to the bottle (one-third of the total amount of 51 mL).
- Shake the bottle well to mix the powder and water.
- Add the remaining 34 mL of water to the bottle and shake again.
- Check that the final volume of the oral suspension is 75 mL.
The nurse should expect the bottle to contain 75 mL of oral suspension after reconstitution.
This is because each 5 mL of oral suspension contains 400 mg of amoxicillin, and the net contents of the powder are equivalent to 6 grams (6000 mg) of amoxicillin.
Therefore, 6000 mg / 400 mg = 15, which means that 15 doses of 5 mL each are needed to use up all the powder. Multiplying 15 by 5 mL gives 75 mL, which is the final volume of the oral suspension.
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