An adult client experiencing pain associated with maxillofacial surgery receives a prescription for acetaminophen and codeine phosphate oral solution 25 mL PO every 6 hours PRN. The bottle is labeled: "Acetaminophen and Codeine Phosphate Oral Solution, USP: 120/12 mg per 5 mL." How many mg of codeine will the client receive with each dose? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["60"]
Given:
Ordered dose: 25 mL PO every 6 hours PRN
Medication label: "Acetaminophen and Codeine Phosphate Oral Solution, USP: 120/12 mg per 5 mL"
Step 1: Determine the concentration of codeine in the solution:
Concentration of Codeine = Amount of Codeine / Volume of Solution
Concentration of Codeine = 12 mg / 5 mL
Concentration of Codeine = 2.4 mg/mL
Step 2: Calculate the amount of codeine per dose:
Amount of Codeine per Dose = Concentration of Codeine x Volume per Dose
Amount of Codeine per Dose = 2.4 mg/mL x 25 mL
Amount of Codeine per Dose = 60 mg
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.8"]
Explanation
Given:
Ordered dose of phenytoin: 20 mg
Concentration of phenytoin suspension: 125 mg/5 mL
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
20 mg / Volume = 125 mg/5 mL
Step 3: Solve for the unknown volume:
Volume = 20 mg / (125 mg/5 mL)
Volume = 20 mg x (5 mL / 125 mg)
Volume = 0.8 mL
Correct Answer is ["28"]
Explanation
Given:
Volume of fluid: 1 liter = 1000 mL
Infusion time: 6 hours
Drop factor: 10 gtt/mL
Formula:
Flow rate (gtt/min) = (Volume (mL) / Time (hr)) x Drop factor (gtt/mL) / 60 min/hr
Step 1: Calculate the infusion rate in mL/hr:
Infusion rate (mL/hr) = Volume (mL) / Time (hr)
Infusion rate (mL/hr) = 1000 mL / 6 hr
Infusion rate (mL/hr) = 166.67 mL/hr
Step 2: Calculate the flow rate in gtt/min:
Flow rate (gtt/min) = (Infusion rate (mL/hr) x Drop factor (gtt/mL)) / 60 min/hr
Flow rate (gtt/min) = (166.67 mL/hr x 10 gtt/mL) / 60 min/hr
Flow rate (gtt/min) = 1666.7 gtt/hr / 60 min/hr
Flow rate (gtt/min) = 27.778 gtt/min
Step 3: Round to the nearest whole number:
Flow rate (gtt/min) ≈ 28 gtt/min
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