Final answer:
To calculate the infusion rate for 1000 ml of 0.9% NaCl over 12 hours, divide the total volume by the time, resulting in 83.33 ml per hour. The infusion device should be set to approximately 83 ml/hour.
Step-by-step explanation:
To calculate the infusion rate for an order of 1000 ml of 0.9% NaCl (normal saline) over 12 hours using an electronic infusion device, you would divide the total volume of the solution by the number of hours it is meant to infuse. The formula for the infusion rate is as follows:
Infusion Rate = Total Volume (ml) / Time (hours)
In this case, the calculation would be:
Infusion Rate = 1000 ml / 12 hours
This results in an infusion rate of approximately 83.33 ml per hour. When setting the electronic infusion device, you would therefore set it to deliver the saline solution at a rate of 83 ml/hour, rounding to the nearest whole number, to complete the infusion over the prescribed 12-hour period.