A nurse is preparing to administer perphenazine 200 mg divided into four equal doses daily to a client who has psychosis. Available is perphenazine oral solution16 mg/mL. How many mL should the nurse administer per dose? Round the answer to the nearest tenth. (Use a leading zero if it applies. Do not use trailing zeros.)
The Correct Answer is ["3.1"]
Given:
- Total perphenazine to be administered: 200 mg
- The medication is to be divided into four equal doses
- Available perphenazine oral solution: 16 mg/mL
Step 1: Calculate the amount of perphenazine per dose
200 mg ÷ 4 = 50 mg/dose
Step 2: Calculate the volume of the oral solution per dose
(50 mg/dose) ÷ (16 mg/mL) = 3.125 mL/dose
Rounding to the nearest tenth, the nurse should administer 3.1 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Propranolol extended-release 80 mg PO daily is a standard prescription for hypertension and certain types of heart conditions. The dosage and frequency are within normal ranges, and the route of administration (PO, per os, or orally) is clear.
Choice B reason: Sertraline is typically prescribed at doses ranging from 50 to 200 mg daily for adults. A dose of 125 mg daily is not a standard increment for sertraline tablets, which come in 25 mg, 50 mg, and 100 mg strengths. Therefore, the nurse should clarify this prescription to ensure proper dosing and to confirm if the provider intends for the patient to take a combination of tablets to achieve this dose.
Choice C reason: Pantoprazole 40 mg PO BID (twice a day) is a common prescription for conditions like GERD or erosive esophagitis. The dosage, frequency, and route are appropriate and do not require clarificationâ¶.
Choice D reason: Clonidine transdermal 0.1 mg/24h applied every 7 days is a typical prescription for managing hypertension. The patch provides a continuous dose over a week, which is a standard practice for this form of medication.
Correct Answer is ["2.8"]
Explanation
Step 1: The dose to be administered is9 mg of aripiprazole.
Step 2: The available aripiprazole injection has a concentration of9.75 mg/3 mL. This means that for every 3 mL of the solution, there are 9.75 mg of aripiprazole.
Step 3: To find out how many mL should be administered, we divide the dose by the concentration. So, 9 mg ÷ (9.75 mg/3 mL) = 2.769230769230769 mL.
Step 4: Round the answer to the nearest tenth. So, 2.769230769230769 mL rounds to2.8 mL.
The nurse should administer 2.8 mL of aripiprazole injection.
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