2. An IV solution must be made in the pharmacy and delivered to the floor. It consists of 20 mEq of potassium chloride in a liter of dextrose 5% in water. How many liters must be dispensed for a day’s supply if the rate is 125 mL/h?
Answer
125 mL/h × 24 h/d = 3000 mL = 3 L
3. An order is written for dopamine 400 mg in 250 mL dextrose 5% in water. Dopamine is available 40 mg/mL in 5 mL vials. How much dopamine is added to the D5W?
Answer
4. What is the final concentration of dopamine solution in mg/mL if 400 mg are contained in 250 mL of D5W?
Answer
400 mg/250 mL = 1.6 mg/mL
5. The dopamine solution requested above is to be administered at a rate of 20 mcg/kg/min and titrated to the desired effect. What is the amount of dopamine needed for a 176 lb patient in 1 hour?
Answer
6. Based on the dopamine infusion prepared above, what rate in mL/h must be set on the infusion pump?
Answer
Need 96 mg/h and the solution has a concentration of 1.6 mg/mL
Then,
7. There is an order for 20 mEq of potassium per liter of D5-1/2 NS. If the rate of the infusion is 50 mL/h, how much potassium does the patient receive in 4 hours?
Answer
8. A patient has an order for nafcillin 2 g in 50 mL D5W q4h. What volume of solution does the patient receive in 24 hours?
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