GTT Dosage Calculations Flashcards

Questions and Answers

Calculate the IV flow rate in gtt/min for the administration of 1000 mL D5LR to infuse in 8 hr with a drop factor of 20 gtt/mL.

42 gtt/min

Calculate the IV flow rate in gtt/min for the administration of 1000 mL LR to infuse in 10 hr with a drop factor of 20 gtt/mL.

33 gtt/min

Calculate the IV flow rate in gtt/min for a unit of packed cells (250 mL) to infuse in 4 hr with a drop factor of 20 gtt/mL.

21 gtt/min

Calculate the IV flow rate in gtt/min for 2L D5LR infusing at 150 mL/hr with a drop factor of 15 gtt/mL.

38 gtt/min Signup and view all the answers

Calculate the IV flow rate in gtt/min for infusing 3000 mL D5W in 20 hr with a drop factor of 20 gtt/mL.

50 gtt/min Signup and view all the answers

Recalculate the IV flow rate in gtt/min for 600 mL remaining of D5W to be infused over 4 hr at a drop factor of 20 gtt/mL.

50 gtt/min Signup and view all the answers

How long will it take for the IV infusing at 20 gtt/min with a drop factor of 10 gtt/mL to complete when administering 1000 mL of D5W?

8 hr 20 min Signup and view all the answers

How many mL of fluid will a client receive in 8 hr if the IV is set at 25 gtt/min with a drop factor of 15 gtt/mL?

800 mL Signup and view all the answers

Study Notes

IV Flow Rate Calculations

IV flow rate calculations determine the rate of fluid delivery in drops per minute (gtt/min).
The formula for calculating gtt/min:
- gtt/min = (drop factor in gtt/mL) × (total volume in mL) / (infusion time in hr × 60 min/hr).

Examples of Calculations

1000 mL D5LR in 8 hours, drop factor 20 gtt/mL
- Flow rate: 42 gtt/min
- Calculation:
  - 20 gtt/mL × 1000 mL / (8 hr × 60 min) = 42 gtt/min.
1000 mL LR in 10 hours, drop factor 20 gtt/mL
- Flow rate: 33 gtt/min
- Calculation:
  - 20 gtt/mL × 1000 mL / (10 hr × 60 min) = 33 gtt/min.
250 mL of packed cells in 4 hours, drop factor 20 gtt/mL
- Flow rate: 21 gtt/min
- Calculation:
  - 20 gtt/mL × 250 mL / (4 hr × 60 min) = 21 gtt/min.
2L D5LR at 150 mL/hr, drop factor 15 gtt/mL
- Flow rate: 38 gtt/min
- Calculation:
  - 15 gtt/mL × 150 mL/hr / 60 min = 38 gtt/min.
3000 mL D5W in 20 hours, drop factor 20 gtt/mL
- Flow rate: 50 gtt/min
- Calculation:
  - 20 gtt/mL × 3000 mL / (20 hr × 60 min) = 50 gtt/min.

Adjusting Flow Rate

Infusing 1000 mL D5W over 8 hours with only 400 mL infused after 4 hours
- Remaining volume: 600 mL
- Remaining time: 4 hours
- New flow rate: 50 gtt/min
- Calculation:
  - 20 gtt/mL × 600 mL / (4 hr × 60 min) = 50 gtt/min.

Duration of Infusion

1000 mL D5W infusing at 20 gtt/min, drop factor 10 gtt/mL
- Time to infuse: 8 hours and 20 minutes
- Calculation:
  - Total drops: 1000 mL × 10 gtt/mL = 10000 gtt
  - Time: 10000 gtt / (20 gtt/min) = 500 min, which converts to 8 hr 20 min.

Total Volume Calculation

IV at 25 gtt/min, drop factor 15 gtt/mL over 8 hours
- Fluid received: 800 mL
- Calculation:
  - 25 gtt/min × 60 min/hr × 8 hr = 12000 gtt
  - Volume: 12000 gtt / 15 gtt/mL = 800 mL.

Description

Test your knowledge on IV flow rate calculations with these flashcards designed for medical dosage assessments. Master the method of calculating drops per minute for various fluid infusion scenarios. Each card presents practical problems to enhance your diagnostic skills.