A nurse is preparing to administer chlorpromazine hydrochloride 40 mg IM to a client who has anorexia nervosa. Available is chlorpromazine hydrochloride injection 25 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 ["1.6"]
Step-by-Step Calculation
Understanding the Problem
Desired dose: 40 mg of chlorpromazine hydrochloride
Available concentration: 25 mg/mL
Calculations
Calculate the volume to administer:
Volume (mL) = Desired dose (mg) / Concentration (mg/mL)
Volume = 40 mg / 25 mg/mL = 1.6 mL
The nurse should administer 1.6 mL of chlorpromazine hydrochloride.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Dose:
The dose of 2 mg is clearly specified in the prescription and does not need further clarification. It is the correct amount to administer based on the provided information.
B. Route:
The route of administration for haloperidol should be specified if it is not included in the prescription. Haloperidol can be administered orally, intramuscularly, or intravenously, and knowing the correct route is crucial to ensure proper and effective administration of the medication.
C. Frequency:
The frequency is indicated as "every 4 hr PRN" (as needed), which specifies how often the medication can be given. There is no need for further clarification regarding the frequency.
D. Medication:
The medication, haloperidol, is already identified in the prescription. There is no need to ask for clarification regarding the medication itself, as it is clearly stated.
Correct Answer is ["1"]
Explanation
Step-by-Step Calculation
Understanding the Problem
Total daily dose of bupropion: 450 mg
Divided equally every 3 hours
Available tablets: 150 mg sustained-release
Calculating Doses per Day
There are 24 hours in a day.
Dividing the day into 3-hour intervals: 24 hours / 3 hours/dose = 8 doses per day
Calculating Dose per Administration
Total daily dose / Number of doses per day = Dose per administration
450 mg / 8 doses = 56.25 mg/dose
Determining Number of Tablets per Dose
Dose per administration / Strength of tablet = Number of tablets
56.25 mg/dose / 150 mg/tablet = 0.375 tablets/dose
Rounding and Adjusting
Since we can't administer part of a tablet, we round up to the nearest whole number: 1 tablet/dose.
The nurse should administer 1 tablet of bupropion 150 mg sustained-release per dose.
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