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Practice Question

A nurse is preparing to administer levothyroxine 50 mcg PO to a client. How many milligrams (mg) should the nurse plan to administer?

Answer Choices:

Correct Answer:

0.05 mg.

Rationale:

➤ To convert micrograms (mcg) to milligrams (mg), the nurse must divide by 1,000:

50 mcg ÷ 1,000 = 0.05 mg

➤ This conversion is essential for accurate dose preparation and preventing medication errors, especially with potent drugs like levothyroxine, which has a narrow therapeutic range.

➤ An incorrect conversion (e.g., giving 50 mg instead of 0.05 mg) would result in a 1,000-fold overdose, potentially leading to severe thyrotoxicosis, tachycardia, or cardiac arrest.

➤ Nurses must always double-check conversions and understand that mcg to mg is a common medication calculation that can significantly impact patient safety.

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ATI NUR 1100

90 Questions

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Question Details
  • Category: RN - Nursing Exam(s)
  • Subcategory: ATI Exams
  • Domain: ATI PHARMACOLOGY
  • Answer Choices: 4
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