A nurse is preparing to administer hydroxyzine hydrochloride 75 mg IM to a client who has anxiety. Available is hydroxyzine hydrochloride 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 ["1.5"]
Step-by-Step Calculation
Understanding the Problem
Desired dose: 75 mg hydroxyzine hydrochloride
Available concentration: 50 mg/mL
We need to find the volume to administer.
Calculations
Calculate the volume to administer:
Volume (mL) = Desired dose (mg) / Concentration (mg/mL)
Volume = 75 mg / 50 mg/mL = 1.5 mL
The nurse should administer 1.5 mL of hydroxyzine hydrochloride.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["300"]
Explanation
Answer
The nurse should administer 300 mg of lithium.
Step-by-Step Calculation
Understanding the Problem
Desired lithium dose: 0.3 grams
Need to convert grams to milligrams
Calculations
1 gram = 1000 milligrams
0.3 grams = 0.3 X 1000 = 300 milligrams
The nurse should administer 300 mg of lithium.
Correct Answer is ["0.5"]
Explanation
The nurse should administer 0.5 mL of epinephrine.
Step-by-Step Calculation
Understanding the Problem
Desired dose: 0.5 mg epinephrine
Available concentration: 1 mg/mL epinephrine
Setting Up the Equation
We can use the following formula:
Desired dose (mg) = Concentration (mg/mL) X Volume (mL)
We need to find the volume (mL).
Calculating the Volume
0.5 mg = 1 mg/mL X Volume (mL)
To isolate Volume, we divide both sides by 1 mg/mL:
Volume (mL) = 0.5 mg / (1 mg/mL)
Volume (mL) = 0.5 mL
The nurse should administer 0.5 mL of epinephrine.
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