NCLEX RN Test Bank with Rationales Related

Review NCLEX RN Test Bank with Rationales related questions and content

The nurse has an order to administer ampicillin (Omnipen) 250 mg I.M. After reconstituting the ampicillin with sterile water for injection, the solution available is 500 mg/mL. How many milliliters should the nurse administer?

  • A. 0.5 mL.
  • B. 1 mL.
  • C. 2 mL.
  • D. 1.5 mL.
Correct Answer: A

Rationale: To administer 250 mg from a 500 mg/mL solution, the calculation is 250 mg / 500 mg/mL = 0.5 mL.