Hesi rn dosage calculations proctored exam
Calculation
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.)
mg
Explanation & Rationale
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
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