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    Hesi rn dosage calculation proctored exam
    Calculation

    The healthcare provider prescribes magnesium hydroxide 4,800 mg PO at bedtime for a client with constipation. The bottle is labeled. "Magnesium Hydroxide Saline Laxative, USP 400 mg per 5 mL." How many ounces should the nurse instruct the client to take with each dose? (Enter numerical value only.)

    ounces

    Explanation & Rationale

    Desired dose = 4,800 mg Available concentration = 400 mg / 5 mL Calculate the volume to administer in milliliters: Volume to administer (mL) = Desired dose (mg) / Concentration (mg/mL) = 4,800 mg / (400 mg / 5 mL) = 4,800 mg / 80 mg/mL = 60 mL Convert the volume from milliliters to ounces: 1 ounce is approximately equal to 30 mL Volume to administer (ounces) = Volume to administer (mL) / 30 mL/ounce = 60 mL / 30 mL/ounce = 2 ounces

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