A nurse is preparing to administer olanzapine 210 mg IM to a client who has schizophrenia Available is olanzapine 300 mg/2 mL How many mL the nurse administer? (Round to the nearest tenth. Use a leading zero if it applies: Do not use a trailing zero)
The Correct Answer is ["1.4"]
Determine the concentration of the olanzapine injection:
Available concentration: 300 mg / 2 mL
Calculate the volume (in mL) needed for a 210 mg dose:
Use the concentration as a conversion factor:
Volume (mL) = Ordered dose (mg) / Concentration (mg/mL) Volume (mL) = 210 mg / (300 mg / 2 mL)
Simplify the complex fraction:
Volume (mL) = 210 mg x (2 mL / 300 mg)
Calculate:
Volume (mL) = (210 x 2) / 300 = 420 / 300 = 1.4 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["2"]
Explanation
Identify the Desired Dose and Available Concentration:
Desired Dose: 2 mg of benztropine mesylate
Available Concentration: 1 mg/mL (This means there is 1 mg of benztropine mesylate in every 1 mL of solution)
Set up the Calculation:
We need to find the volume (in mL) that contains the desired dose of 2 mg.
We can use the following formula:
Volume (mL) = Desired Dose (mg) / Available Concentration (mg/mL)
Plug in the Values and Calculate:
Volume (mL) = 2 mg / 1 mg/mL
Volume (mL) = 2 mL
Round to the Nearest Whole Number :
2 mL
Correct Answer is ["0.5"]
Explanation
Identify the Desired Dose and Available Concentration:
Desired Dose: 75 mg of amitriptyline
Available Concentration: 150 mg per tablet
Set up the Calculation:
We need to find out how many tablets contain the desired dose of 75 mg.
We can use the following formula:
Number of Tablets = Desired Dose (mg) / Available Dose per Tablet (mg)
Plug in the Values and Calculate:
Number of Tablets = 75 mg / 150 mg/tablet
Number of Tablets = 0.5 tablets
Round to the Nearest Tenth :
0.5 tablets
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