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    HESI PN Exit Proctored ExamQuestion 149
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    HESI PN Exit Proctored Exam
    Calculation

    The healthcare provider prescribes cefazolin 500 mg IM every 6 hours. The available vial is labeled, "Cefazolin 1 gram,”. and the instructions for reconstitution state, "For IM use, add 2.5 mL sterile water for injection to provide a total volume of 3.0 mL.”. After reconstitution, how many mL should be administered to the client? (Enter numeric value only. If rounding is required, round to the nearest tenth.).

    mL

    Explanation & Rationale

    Step 1: 1 gram = 1000 mg Step 2: 500 mg ÷ 1000 mg = 0.5 Step 3: 0.5 × 3.0 mL = 1.5 mL Answer: 1.5 mL

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