I am confused and need some help with this math question.

Nursing Students NCLEX

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The client with lung cancer is 1 day post-op lobectomy and demonstrates symptoms of infection. The health care provider orders 900 mg of Nafcillin. There is powder in a vial labeled "Nafcillin 1 gram" with instructions "to dilute with 3.4 mL of sterile water to produce 1 gram in 4 mL.".

How many milliliters does the nurse administer? (Round to the nearest tenth and write only the number.)

**please let me know some simple steps on how you got the answer. Maybe i am studying too much and my brain is burning out

Specializes in CMSRN.

I use a similar method to Loriangel14.

Desired dose/Have * Quantity = X (D/H * Q = X)

Desired (900 mL)/Have (1000 mL) * 4 mL = 3.6 mL

Good luck!

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