A nurse is preparing to administer lactated Ringer’s 75 mL/hr by continuous IV infusion. The drop factor on the manual IV tubing is 20 gtt/mL. The nurse should set the IV flow rate to deliver how many gtt/min? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The correct answer and Explanation is :
To calculate the IV flow rate in drops per minute (gtt/min), you can follow these steps:
- Determine the total mL per hour: The nurse is administering 75 mL/hr.
- Convert mL/hr to mL/min:
[
75 \, \text{mL/hr} \div 60 \, \text{min/hr} = 1.25 \, \text{mL/min}
] - Calculate drops per minute using the drop factor: The drop factor of the manual IV tubing is 20 gtt/mL. To find the flow rate in gtt/min, multiply the mL/min by the drop factor:
[
1.25 \, \text{mL/min} \times 20 \, \text{gtt/mL} = 25 \, \text{gtt/min}
] - Round the answer: In this case, 25 is already a whole number, so no rounding is necessary.
Thus, the nurse should set the IV flow rate to 25 gtt/min.
Explanation:
Administering IV fluids accurately is crucial in nursing practice, especially for maintaining hydration and electrolyte balance in patients. The calculation involves converting the prescribed rate from mL/hr to mL/min, then translating that volume into the number of drops per minute using the specific drop factor of the IV tubing.
The drop factor indicates how many drops are in a milliliter and varies with different types of IV sets. Understanding this conversion process is essential for ensuring that patients receive the correct volume of fluids over time, preventing both under-infusion and over-infusion, which can lead to complications.
Monitoring the IV flow rate continuously is also important to ensure the prescribed infusion rate is maintained, and adjustments should be made if the flow appears too fast or too slow. This practice supports patient safety and optimal outcomes in fluid management.