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Practice Math Questions: 2250
1. 1000 mL D5LR to infuse in 8 hr. The administration set is 20 gtt/mL. Calculate the I.V. flow rate in gtt/min.
2. 300 mL NS to infuse in 6 hr. The administration set is 60 gtt/mL. Calculate the I.V. flow rate in gtt/min.
3. 1,500 mL NS to infuse in 12 hr. The administration set is 10 gtt/mL. Calculate the I.V. flow rate in gtt/min.
4. A unit of whole blood (500mL) to infuse in 4 hr. The administration set is 10 gtt/mL. Calculate the I.V. flow rate in gtt/min.
5. Doctor’s order: Administer 1000 Unit heparin I.V. every hour. Solution available is 25,000 Units of heparin in 1 L of NS. The administration set delivers 15 gtt/mL.
6. Doctor’s order: Add 20,000 Units heparin to 500 mLD5W to infuse at 12 mL/hr. Calculate the hourly heparin dose.
7. A client is receiving an I.V. of 1000 mL D5W with 20,000 Unit heparin infusing at 24 gtt/min. The administration set delivers 10 gtt/mL. Calculate the hourly dose of heparin.
8. A client weighing 50 kg. has a Dobutrex solution of 250 mg. in 500 mL ordered at 5 mcg/kg/min. Determine the setting for a volumetric pump.
9. A nitroglycerine drip is infusing at 3 mL/hr. The available solution is 50 mg. in 250 mL D5W. Calculate the mcg/min.
10. Aminophylline 0.25 g is added to 500 mL D5W to infuse in 8 hrs. Calculate the mg/hr.
11. A lidocaine drip is infusing at 22 mL/hr. The solution available is 2 g lidocaine in 250 mL D5W. Calculate the mg/hr.
12. Norepinephrine (Levophed) 2 mcg/min has been ordered to maintain a client’s systolic blood pressure at 100. The solution is 2 mg in 500 mL D5W. Determine the flow rate for a volumetric pump.
13. A client with chest pain has an order for nitroglycerine 10 mcg/min. Solution available is 50 mg nitroglycerine in 250 mL D5W. Calculate the I.V. rate in gtt/min using a microdrip administration set.
14. Doctor’s order: 2 mcg/kg/min of Nipride. Solution available: 50 mg Nipride in 250 mL D5W. Client’s weight is 120 lb. Calculate the dose per minute.
15. Doctor’s order: 3 g/hr of magnesium sulfate. Available: 25 g of 50% magnesium sulfate in 300 mLD5W. How many mL/hr would be needed to administer the required dose?
16. Doctor’s order: Infuse 200 mcg/min of dopamine I.V. The solution available is 400 mg dopamine in 500 mL NS. A volumetric pump is being used.
Answers:
1. 42 gtt/min
2. 50 gtt/min
3. 21 gtt/min
4. 21 gtt/min
5. 10 gtt/min
6. 480 units/hr
7. 2880 units/hr
8. 30 ml/h
9. 10 mcg/min
10. 31.24 mg/h
11. 176 mg/hr
12. 30 mL/h
13. 3 gtt/min
14. 0.5 mL/min
15. 36 mL/h
16. 15 mL/h
