A nurse is preparing to administer fluoxetine 15 mg PO to a client who has premenstrual dysphoric disorder. Available is fluoxetine oral solution 20 mg/5 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 ["3.8\u00a0"]
Rationale:
How to solve it:
Determine the dosage required: 15 mg
Determine the concentration available: 20 mg/5 mL
Use the formula:
Volume (mL)=Required dose (mg)/Concentration (mg/mL)
Convert the concentration into a simpler fraction:
20 mg/5 mL=4 mg/mL
Calculate the volume:
Volume (mL)=15 mg/4 mg/mL
Simplify the calculation:
Volume (mL)=3.75 mL
Round to the nearest tenth:
3.8 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.04"]
Explanation
Step by step calculation:
Determinethedosagerequiredinmcg:40mcg
Understandtheconversionfactor:1mg=1000mcg
Usetheformula:
Weight(mg)=Weight(mcg)1000
Weight(mg)=40mcg/1000mcg
Calculatetheweight:
Weight(mg)=0.04
Correct Answer is D
Explanation
A. Dissolve the tablet in 118 mL (4 oz) liquid: This option is incorrect because buccal tablets are specifically designed to dissolve in the mouth without liquid. Using liquid can dilute the medication and hinder effective absorption.
B. Have the client chew the medication before swallowing: Chewing the buccal tablet is not appropriate, as it can lead to rapid release and loss of the intended slow absorption through the mucous membranes. This method undermines the effectiveness of the medication.
C. Mix the medication in 5 mL (1 tsp) soft food: This action is also incorrect, as mixing the buccal tablet with food may interfere with its absorption. Buccal medications are intended to dissolve between the cheek and gums for optimal effect.
D. Place the tablet between the client's cheek and gums: This is the correct method for administering a buccal tablet. This placement allows the medication to dissolve slowly and be absorbed effectively through the buccal mucosa, providing the desired therapeutic effect.
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