First semester math question..

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At the risk of coming off as a moron, I have a "simple" drug calculation that is really stumping me.

The question: "The order is to give 1/6 gr of a medication. The vial contains 10mg/ml"

I converted the 1/6 gram to mg -> 166 mg

The answer that the assignment gives is that 1mL would be administered to the patient. How are they getting that answer??? Someone please explain this to me, I know I am missing something simple here, but for the life of me, I can't figure out what I'm doing wrong.

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Specializes in OB, NICU, Nursing Education (academic).
At the risk of coming off as a moron, I have a "simple" drug calculation that is really stumping me. The question: "The order is to give 1/6 gr of a medication. The vial contains 10mg/ml"I converted the 1/6 gram to mg -> 166 mg The answer that the assignment gives is that 1mL would be administered to the patient. How are they getting that answer??? Someone please explain this to me, I know I am missing something simple here, but for the life of me, I can't figure out what I'm doing wrong.
The question is about grains, not grams. A grain equals 60 mg, so 1/6 grain is 10 mg. since your med is 10 mg/mL your answer is 1 mL
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Specializes in ED/ICU/TELEMETRY/LTC.

1 Grain = 60 mg

Divide by 10

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Just for some encouragement here, can anybody in clinicals site for the OP an example of even once where you saw medication occur in grains? Just get through this kind of calculations and know it - it is very unlikely you'll ever see such a thing IRL.

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Thanks so much...:)

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