Final answer:
The nurse initiated a 1000 mL IV infusion at 0800 hours, running at a rate of 125 mL/hr. It is now 1300 hours and there are 375 mL left in the IV bag.
Step-by-step explanation:
The nurse initiated a 1000 mL IV infusion at 0800 hours, running at a rate of 125 mL/hr. It is now 1300 hours, so we need to calculate how much is left in the IV bag.
The IV infusion was set to run at 125 mL/hr, beginning at 0800 hours and it is now 1300 hours. This means the infusion has been running for 5 hours. Given a rate of 125 mL/hr, the amount of solution administered in 5 hours is 125 mL/hr * 5 hr = 625 mL. The initial volume of the IV was 1000 mL, so to find the remaining volume in the IV bag, we subtract the amount administered from the initial volume: 1000 mL - 625 mL = 375 mL.
To do this, we need to find the total amount of fluid that has been infused since 0800 hours. It has been 5 hours since then, so the total amount infused is 125 mL/hr * 5 hours = 625 mL.
To find how much is left in the IV bag, we subtract the total amount infused from the initial amount in the bag: 1000 mL - 625 mL = 375 mL.
Therefore, the correct answer is C. 375 mL.