Ati dosage calculation rn fundamentals proctored assessment exam 1 ( 34 Questions)
A nurse is preparing to administer cefazolin 250 mg IM to a client. Available is cefazolin powder for injection 500 mg vial. The nurse reconstitutes the powder with 2 mL of sterile water for a concentration of 225 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: 1.1
The nurse can determine the volume of cefazolin to administer based on the available information:
1. Reconstituted concentration: The cefazolin is reconstituted to a concentration of 225 mg/mL.
2. Dosage required: The nurse needs to administer 250 mg of cefazolin.
3. Volume calculation: We can use the following formula to find the volume to administer:
Volume (mL) = Dosage (mg) / Concentration (mg/mL)
Volume (mL) = 250 mg / 225 mg/mL
4. Rounding the answer: Round the answer to the nearest tenth of a milliliter.
Volume (mL) = 1.1 mL (rounded to one decimal place)
Therefore, the nurse should administer 1.1 mL of the reconstituted cefazolin solution.
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