PSI Pharmaceutical Calculations 2

Question 1

An IV infusion of 1000 mL is prescribed to run over 8 hours. What is the required flow rate in mL/hour?

Accepted Answer

125 mL/hr

Answer

80 mL/hr

Answer

100 mL/hr

Answer

150 mL/hr

Question 2

A giving set delivers 20 drops/mL. An infusion of 500 mL must run over 4 hours. What is the drip rate in drops per minute?

Accepted Answer

42 drops/min

Answer

20 drops/min

Answer

35 drops/min

Answer

50 drops/min

Question 3

A child weighing 25 kg requires ibuprofen 10 mg/kg. The suspension is 100 mg/5 mL. What volume should be administered?

Accepted Answer

12.5 mL

Answer

5 mL

Answer

10 mL

Answer

25 mL

Question 4

You need to prepare 200 mL of a 0.9% NaCl solution from a 20% NaCl stock. What volume of stock solution is required?

Accepted Answer

9.0 mL

Answer

1.8 mL

Answer

4.5 mL

Answer

18.0 mL

Question 5

A KCl infusion contains 20 mmol in 500 mL. The maximum safe infusion rate is 10 mmol/hour. What is the minimum infusion time?

Accepted Answer

2 hours

Answer

1 hour

Answer

4 hours

Answer

5 hours

Question 6

A 10 mg/mL solution needs to be diluted to a final concentration of 2 mg/mL. What is the dilution factor?

Accepted Answer

5

Answer

2

Answer

8

Answer

10

Question 7

Heparin is prescribed at 1000 units/hour. The infusion bag contains 25,000 units in 50 mL. At what rate should the infusion pump be set?

Accepted Answer

2 mL/hr

Answer

1 mL/hr

Answer

5 mL/hr

Answer

10 mL/hr