A nurse is preparing to administer benztropine mesylate 3 mg IM to a client who has schizophrenia and is experiencing an extrapyramidal reaction to an antipsychotic medications. Available is benztropine mesylate injection 1 mg/mL in 2 mL ampules. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["3"]
The nurse should administer 3 mL of benztropine mesylate.
Step-by-Step Calculation
Understanding the Problem
Desired dose: 3 mg benztropine mesylate
Available concentration: 1 mg/mL benztropine mesylate
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
3 mg = 1 mg/mL X Volume (mL)
To isolate Volume, we divide both sides by 1 mg/mL:
Volume (mL) = 3 mg / (1 mg/mL)
Volume (mL) = 3 mL
The nurse should administer 3 mL of benztropine mesylate.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1.5"]
Explanation
Answer
The nurse should administer 1.5 mL of haloperidol.
Step-by-Step Calculation
Understanding the Problem
Desired dose: 75 mg haloperidol
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 haloperidol.
Correct Answer is ["3"]
Explanation
The nurse should administer 3 mg of lorazepam
Step-by-Step Calculation
Understanding the Problem
Desired lorazepam dose: 0.003 g
Need to convert grams to milligrams
Calculations
1 gram = 1000 milligrams
0.003 grams = 0.003 X 1000 = 3 milligrams
The nurse should administer 3 mg of lorazepam.
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