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    Hesi Medical Dosage Calculation Proctored Exam
    Calculation

    The healthcare provider prescribes magnesium hydroxide 4800 mg by mouth 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.)

    oz

    Explanation & Rationale

    Dosage required: 4800 mg Concentration: 400 mg per 5 mL First, find the volume needed for the dosage: Volume = Dosage required / Concentration Volume = 4800 mg / 400 mg per 5 mL Volume = 60 mL To convert milliliters to ounces: 1 ounce ≈ 29.5735 mL Volume in ounces = 60 mL / 29.5735 mL per ounce Volume in ounces ≈ 2.03 ounces The nurse should instruct the client to take approximately 2 ounces with each dose.

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