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The nurse receives an order to give atropine 300mcg SQ now. The medication is available in 1mg/mL vial. How many mL should the nurse administer?
(Record the answer to the tenth, or one decimal place. Use a leading zero if it applies. Do not use a trailing zero.)
Answer and Explanation

The Correct Answer is ["0.3"]

  1. Convert the ordered dose from micrograms (mcg) to milligrams (mg):

    • 300 mcg = 0.3 mg (since 1 mg = 1000 mcg)

  2. Use the formula:
    Dose to administer = (Desired Dose ÷ On-Hand Dose) × Quantity Available

    • Desired Dose (D) = 0.3 mg
    • On-Hand Dose (H) = 1 mg
    • Quantity Available (Q) = 1 mL

  3. Calculate:
    0.3 mg ÷ 1 mg × 1 mL = 0.3 mL

The nurse should administer 0.3 mL of the medication.


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