Drug dosage calculations - question on rounding

Nursing Students Student Assist

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Good day:

From dosagehelp.com practice questions: Phenytoin (Dilantin), 11,000 mg PO, is ordered to be given through a nasogastric tube. Phenytoin is available as 19 g / 12 mL. How much would the nurse administer?

I came up with 6.947368421 mL. Dosagehelp.com expects the answer to be 6.9 mL. How do you know how many significant figures to use based on the type of question?

Thank you.

Specializes in MICU.
Where did I use the term significant figures? I was simply offering the original poster an insight into how my program has taught us how to round for nursing. I didn't use the term significant figures deliberately because those aren't the rules we use. Geesh.

Ohhh my gawd!!!

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