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    Hesi RN Dosage Calculation WGU Proctored Exam
    Calculation

    A client with an extrapyramidal reaction receives a prescription for diphenhydramine 35 mg IM. The medication is supplied as 50 mg/ml in a 1 mL prefilled single use syringe. How many mL should the nurse give? (Enter the numerical value only. If rounding is required, round to the nearest tenth.)

    mL

    Explanation & Rationale

    The client is to receive 35 mg of diphenhydramine. The medication is available in a concentration of 50 mg/mL. Therefore, the volume of medication to administer is: 35mg /50mg/mL ​= 0.7mL So, the nurse should administer 0.7 mL of diphenhydramine.

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