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Which of the following is the correct representation of 0.5 grams in milligrams?

A.

500 mg

B.

0.005 mg

C.

5,000 mg

D.

50 mg

Answer and Explanation

The Correct Answer is A

Calculation:

  • conversion factor between grams and milligrams

1 gram = 1,000 milligrams

  • Convert 0.5 grams to milligrams

0.5 × 1,000 = 500 mg


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Related Questions

Correct Answer is B

Explanation

A. Administering insulin without verifying the patient's blood glucose level: Skipping blood glucose verification increases the risk of hypoglycemia or hyperglycemia, compromising patient safety.

B. Double-checking the insulin dose with another nurse before administration: Independent verification by a second licensed nurse helps ensure the correct dose, type, and timing of insulin, reducing the risk of potentially harmful dosing errors.

C. Using the same needle for multiple insulin injections in the same patient: Reusing needles increases the risk of infection and tissue damage and does not promote safe administration practices.

D. Allowing the patient to self-administer without supervision: While patient independence is important, supervision is necessary to confirm correct technique and dosage, especially for high-alert medications like insulin.

Correct Answer is A

Explanation

Ordered Dose: 500 mg

Available Concentration: 250 mg per 5 mL

  • Calculate the volume to administer using ratio and proportion

Volume to administer = (Ordered Dose ÷ Concentration) × Volume of Concentration

Volume to administer = (500 ÷ 250) × 5

Volume to administer = 2 × 5

Volume to administer = 10 mL

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