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The question asks how many milliliters of epinephrine need to be administered if an order is received for epinephrine 0.5 mg IM with a concentration of available epinephrine ampules being 1:1000.

Given:
- The concentration of the epinephrine is 1:1000. This means 1 mg of epinephrine per 1 mL of solution.
- The dosage required is 0.5 mg.

Since the solution is 1 mg per 1 mL, to get 0.5 mg of epinephrine, you would need 0.5 mL of the solution.

Hence, the correct answer is **A. 0.5 mL**.

Would you like to understand this calculation in more detail or do you have any other questions?

Here are some related questions you might consider:
1. How would the volume change if the dosage requirement was 0.25 mg?
2. What would be the required volume if the concentration was 1:2000 instead?
3. How can you prepare a dilution to obtain a different concentration?
4. What precautions should be considered when calculating dosages for high-concentration solutions?
5. How would you adjust the calculation if administering a medication via a different route, such as IV?

Tip: Always double-check the concentration and required dosage units to ensure accurate medication administration.

An order is received for epinephrine 0.5 mg IM x 1 dose. The concentration of the available epinephrine ampules is 1:1000. How many milliliters of epinephrine is to be administered to the patient?

Learn how to calculate the required volume of epinephrine when given a dosage of 0.5 mg and a concentration of 1:1000. This problem covers key concepts like dosage calculations and proportional reasoning, suitable for medical or nursing students.

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