HESI RN Exit VI Proctored Exam
Calculation
The healthcare provider prescribes amoxicillin 5 grams PO daily, in equally divided doses to be administered every 8 hours. The medication is available in a bottle labeled, "Amoxicillin suspension 200 mg/5 mL." How many mL should the nurse administer every 8 hours? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
mL
Explanation & Rationale
Step 1: Convert grams to milligrams The prescribed dose is 5 grams (g) daily. 1 gram (g) = 1,000 milligrams (mg) 5 g = 5,000 mg daily Step 2: Determine the dose per administration The medication is to be given every 8 hours, meaning the total daily dose is divided into three equal doses: 5,000 mg/3=1,666.67 mg per dose Step 3: Use the medication concentration to find the volume The available suspension is 200 mg per 5 mL. Using the ratio formula: 200 mg/5 mL=1,666.67 mg/X mL Solve for X: X=1,666.67×5/200 X=8,333.35/200=41.67 mL Answer: 41.7 mL (Rounded off to the nearest tenth)
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