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    Ati dosage calculation pn fundamentals proctored assessment 3.2
    Calculation

    A nurse is preparing to administer cefazolin 250 mg IM to a client. Available is cefazolin powder for injection 500 mg vial. The nurse reconstitutes the powder with 2 mL of sterile water for a concentration of 225 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

    mL

    Explanation & Rationale

    Calculation: Desired dose = 250 mg. Available concentration after reconstitution = 225 mg/mL. Calculate the volume to administer. Volume (mL) = Desired dose (mg) / Available concentration (mg/mL) = 250 mg / 225 mg/mL = 1.111... mL. Step 4: Round the answer to the nearest tenth. Rounded volume = 1.1 mL.

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