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    Rn Hesi Dosage Calculations Proctored Exam
    Calculation

    The healthcare provider prescribes amrinone 55 mg via intravenous (IV) bolus to be given over 2 minutes. The available vial is labeled, "Amrinone 100 mg/25 mL." How many mL should the nurse administer per minute? (Enter numerical value only. If rounding is required, round to the nearest hundredth.)

    mL/min

    Explanation & Rationale

    To calculate the volume of amrinone solution, we need to use the formula: Volume (mL) = Dose (mg) x Dilution factor (mL/mg) The dilution factor is the ratio of the volume of the vial to the amount of amrinone in the vial. In this case, it is 25 mL / 100 mg. Plugging in the given values, we get: Volume (mL) = 55 mg x 25 mL / 100 mg Simplifying, we get: Volume (mL) = 13.75 mL To calculate the rate of administration, we need to divide the volume by the time. In this case, it is 2 minutes. Plugging in the given values, we get: Rate (mL/min) = 13.75 mL / 2 min Simplifying, we get: Rate (mL/min) = 6.875 mL/min Rounding to the nearest hundredth, we get: Rate (mL/min) = 6.88 mL/min

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