A registered nurse is preparing to administer intramuscular Haloperidol. The physician's order reads: 'Haloperidol 7.5 mg IM stat'. The ampoule contains 5 mg/mL. How many milliliters (mL) should the nurse draw up?
Answer and explanation
Correct answer: B. 1.5 mL
- Step 1: Use the basic dosage calculation formula: .
- Step 2: Substitute values: .
Answer
1.5 mL.
Why not the others: '2.0 mL' delivers 10 mg; '1.0 mL' delivers only 5 mg; '0.75 mL' divides 7.5 by 10 instead of 5.
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