You are to give 1000ml of IV fluid over 8 hours. You hung a new bag at 2200. At 0100 you found that 425ml has infused. To finish the fluids on time, what would your adjusted hourly rate be?

Choice A reason: Total volume is 1000 ml and total time is 8 hours. From 2200 to 0100, 3 hours have passed. Volume remaining = 1000 ml - 425 ml = 575 ml. Time remaining = 8 hours - 3 hours = 5 hours. Adjusted rate = 575 ml / 5 hours = 115 ml/hr. Choice B reason: This would be the initial rate (1000 / 8 = 125). However, because 425 ml has already infused in only 3 hours, the pump was originally running faster than 125 ml/hr (actually 141.6 ml/hr). To finish on time, the rate must now be decreased, not kept at the original calculation. Choice C reason: This number does not correspond to the remaining volume or time. It may result from a calculation error where the total volume was divided by the remaining time (1000 / 5), which ignores the 425 ml that has already been successfully infused into the patient's vascular system. Choice D reason: This is an incorrect calculation that does not account for the specific volume-to-time ratio remaining. 200 ml/hr over the remaining 5 hours would result in a total infusion of 1000 ml in that timeframe alone, ignoring the 425 ml already administered, leading to fluid overload.