The patient has nausea and vomiting. The provider orders 35 mg of Vistaril PO. The supply on hand is 25 mg/5 mL. Which is the correct dose?

The patient has nausea and vomiting. The provider orders 35 mg of Vistaril PO. The supply on hand is 25 mg/5 mL. Which is the correct dose?

• A. 7 mL
• B. 5 mL
• C. 6 mL
• D. 8 mL

Answer: (A)

Convert the prescribed dose to milliliters using the given concentration. The solution is 25 mg/5 mL, which is 5 mg per 1 mL. To get 35 mg, calculate 35 mg ÷ (5 mg/mL) = 7 mL. Verification: 7 mL × 5 mg/mL = 35 mg. So the correct volume to administer is 7 mL.

Convert the prescribed dose to milliliters using the given concentration. The solution is 25 mg/5 mL, which is 5 mg per 1 mL. To get 35 mg, calculate 35 mg ÷ (5 mg/mL) = 7 mL. Verification: 7 mL × 5 mg/mL = 35 mg. So the correct volume to administer is 7 mL.