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    HESI RN Dosage Calculation Proctored Exam
    Calculation

    A client receives a prescription for amoxicillin 250 mg PO every 8 hours. The client is to take the medication until the bottle is empty. After the nurse reconstitutes the dry powder, how many days will the bottle of medication last? (Enter numerical value only.)

    days

    Explanation & Rationale

    Step 1: Identify the total daily dosage. 250 mg × 3 doses/day = 750 mg/day Step 2: Identify the total amount of medication in the bottle. 150 mL Step 3: Convert mL to mg (since 250 mg/mL is given). 150 × 250 = 37,500 mg Step 4: Calculate the number of days the medication will last. 37,500 ÷ 750 = 50 days

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