Intravenous Calculations

Chapter 13

Calculate the flow rate (mL/hr) for the following infusions. Round to the nearest tenth mL.

1. Infuse D₅W, 500 mL over 5 hours. _____ mL/hr
2. Infuse 0.9% sodium chloride solution, 1 L over 12 hours. _____ mL/hr
3. Infuse 0.45% sodium chloride solution, 250 mL over 2 hours. _____ mL/hr
4. Infuse LR, 2 L over 18 hours. _____ mL/hr
5. Infuse D₅LR, 750 mL over 6 hours. _____ mL/hr
6. Infuse leucovorin calcium 225 mg diluted in 250 mL D₅W solution over 90 minutes.

_____ mL/hr

1. Infuse mycophenolate mofetil 1 g diluted in 150 mL D₅W solution over 1 hour. _____ mL/hr
2. Infuse ondansetron 32 mg diluted in 100 mL 0.9% sodium chloride solution over 15 minutes. _____mL/hr
3. Infuse cefazolin 500 mg diluted in 50 mL 0.9% sodium chloride solution over 30 minutes. _____ mL/hr
4. Infuse bivalirudin 150 mg diluted in 50 mL D₅W solution over 3 hours. _____ mL/hr
5. Infuse aminophylline 250 mg diluted in 8 mL 0.9% sodium chloride solution over 10 minutes using a syringe pump. _____ mL/hr
6. Infuse methylprednisolone 250 mg diluted in 15 mL bacteriostatic water over 20 minutes using a syringe pump. _____ mL/hr
7. Infuse folic acid 1 mg diluted in 5 mL 0.9% sodium chloride solution over 5 minutes using a syringe pump. _____ mL/hr
8. Infuse pantoprazole 40 mg diluted in 25 mL 0.9% sodium chloride solution over 10 minutes using a syringe pump. _____ mL/hr
9. Infuse meperidine 75 mg diluted in 6 mL 0.9% sodium chloride solution over 4 minutes using a syringe pump. _____ mL/hr

Calculate infusion times for the following IVs.

1. An IV infusing at 50 mL/hr with 100 mL of fluid left in the IV bag _____ hr ______ min
2. An IV infusing at 175 mL/hr with 450 mL of fluid left in the IV bag _____ hr _____ min
3. An IV infusing at 24 mL/hr with 400 mL of fluid left in the IV bag _____ hr ______ min
4. An IV infusing at 125 mL/hr with 900 mL of fluid left in the IV bag _____ hr ______ min
5. An IV infusing at 100 mL/hr with 600 mL of fluid left in the IV bag _____ hr ______ min

Calculate the completion time for the following IVs.

1. An IV is infusing at 21 gtt/min; 100 mL of fluid remain in the IV bag. The drop factor of the tubing is 10 gtt/mL. The current time is 0620.
2. An IV is infusing at 36 gtt/min; 50 mL of fluid remain in the IV bag. The drop factor of the tubing is 15 gtt/mL. The current time is 0940.
3. An IV is infusing at 48 gtt/min; 350 mL of fluid remain in the IV bag. The drop factor of the tubing is 60 gtt/mL. The current time is 2100.
4. An IV is infusing at 60 gtt/min; 550 mL of fluid remain in the IV bag. The drop factor of the tubing is 20 gtt/mL. The current time is 0050.
5. An IV is infusing at 24 gtt/min; 750 mL of fluid remain in the IV bag. The drop factor of the tubing is 15 gtt/mL. The current time is 2330.

Calculate the flow rate (gtt/min) for the following IV fluids under manual control.

1. An IV of 1 L 0.9% sodium chloride solution is to be infused over 8 hours. The IV tubing has a drop factor of 20 gtt/mL.
2. An IV of 250 mL D₅W solution is to be infused over 3 hours. The IV tubing has a drop factor of 15 gtt/mL.
3. An IV of 750 mL lactated Ringer’s solution is to be infused over 12 hours. The IV tubing has a drop factor of 20 gtt/mL.
4. An IV of 50 mL 0.45% sodium chloride solution is to be infused over 1 hour. The IV tubing has a drop factor of 60 gtt/mL.
5. An IV of 500 mL D₅W solution is to be infused over 4 hours. The IV tubing has a drop factor of 10 gtt/mL.

Calculate the flow rate (gtt/min) for following IV fluids infusing in mL/hr.

1. An IV fluid is infusing at 150 mL/hr. The drop factor of the tubing is 15 gtt/mL.
2. An IV fluid is infusing at 100 mL/hr. The drop factor of the tubing is 20 gtt/mL.
3. An IV fluid is infusing at 38 mL/hr. The drop factor of the tubing is 60 gtt/mL.
4. An IV fluid is infusing at 12 mL/hr. The drop factor of the tubing is 60 gtt/mL.
5. An IV fluid is infusing at 140 mL/hr. The drop factor of the tubing is 20 gtt/mL.