A prescription requires 750 mg of a medication by the intramuscular route. After reconstitution, the vial contains 500 mg in 2 mL. How much solution should the nurse draw up?

Correct answer: D. 3 mL

  • A. 1 mL
  • B. 1.5 mL
  • C. 2.5 mL
  • D. 3 mL

Explanation

The concentration is 500 mg divided by 2 mL, which equals 250 mg/mL. The required volume is 750 mg divided by 250 mg/mL, giving 3 mL; the route remains intramuscular as prescribed.

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About Routes and Safe Medication Administration

Safe medication administration covers oral, sublingual, buccal, topical, inhaled, enteral, intradermal, subcutaneous and intramuscular routes, including their absorption patterns and technique. It also includes medication rights, patient identification, documentation, allergy checks, injection site selection and prevention of errors, with route selection distinguished from dosage calculation.

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