A nurse is preparing to administer Lithium 300 mg PO every 8 hours. Available is Lithium carbonate 150 mg capsules. How many capsules should the nurse administer per dose?

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Multiple Choice

A nurse is preparing to administer Lithium 300 mg PO every 8 hours. Available is Lithium carbonate 150 mg capsules. How many capsules should the nurse administer per dose?

Explanation:
This question tests converting the prescribed milligrams into how many capsules of the available strength are needed. Each capsule contains 150 mg, and the ordered dose is 300 mg. So you divide: 300 mg ÷ 150 mg per capsule = 2 capsules. Therefore, administer two capsules per dose every 8 hours. The math is simply matching the total milligrams to the strength of each capsule.

This question tests converting the prescribed milligrams into how many capsules of the available strength are needed. Each capsule contains 150 mg, and the ordered dose is 300 mg. So you divide: 300 mg ÷ 150 mg per capsule = 2 capsules. Therefore, administer two capsules per dose every 8 hours. The math is simply matching the total milligrams to the strength of each capsule.

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