Final answer:
To calculate how long a 1000 mL bag of NS would last at 30 mL/hour, we divide the volume by the rate, getting 33.33 hours, which rounds down to 33 hours before the bag is empty. None of the provided options (A, B, C, D) match this calculation exactly.
Step-by-step explanation:
The question is asking for the calculation of the duration it will take for a 1000 mL bag of NS (Normal Saline) to be depleted when it is administered at a rate of 30 mL/hour. To determine this, we simply divide the total volume of the bag by the rate at which the solution is being administered. Therefore, the duration is 1000 mL รท 30 mL/hour = 33.33 hours. Since we are looking for a whole number that represents the full hours when the bag would run out, we would round down to 33 hours because a new bag would need to be hung before the 34th hour begins. The closest answer to this is option B) 24 hours, as the other options are not viable given the rate of administration. However, based on the mathematical calculation, none of the options provided match exactly, and such an issue should be clarified with the instructor or relevant authority.