Question

STUDENT WORKBOOK AC100-MATH FOR HEALTHCARE TO LEARN TO GUIDE TO TEACH 3) The order reads, " D5W (a type of IV fluid) 1 L over 8 hours." How many drops per minute will you count, if the drop factor is 15? 4) At the beginning of a shift, you note that a patient has a 1 Litre IV bag running via a pump. On the pump screen you see that it is infusing at 150 ml per hour, and that 475 ml have already been infused. How much longer will the bag last? 5) At 0730, you start an IV infusion with a 1 L bag. You are running it through a pump which you set for 100 ml per hour. At 0900, the order is increased to 150 ml/hr. At what time will the bag be empty?​

Answer 1

To calculate the number of drops per minute for an IV fluid, use the formula: Drops per Minute = (Volume in mL / Time in min) x Drop Factor. To determine how much longer an IV bag will last, subtract the already infused amount from the total volume and divide by the infusion rate. To find the time at which an IV bag will be empty, add the remaining time to the current time.

Step-by-step explanation:

3) To calculate the number of drops per minute, we can use the formula:

Drops per Minute = (Volume in mL / Time in min) x Drop Factor

In this case, the volume is 1000 mL, the time is 8 hours (or 480 minutes), and the drop factor is 15. Plugging in these values:

Drops per Minute = (1000 mL / 480 min) x 15

After simplifying the equation:

Drops per Minute = 3.13

Therefore, you would count approximately 3 drops per minute.

4) To determine how much longer the 1 liter IV bag will last, you would subtract the already infused amount from the total volume of the bag. In this case, the total volume is 1000 mL and 475 mL have already been infused. Subtracting:

Remaining Volume = 1000 mL - 475 mL

The remaining volume is 525 mL. To find how much longer the bag will last, we can divide the remaining volume by the infusion rate of 150 mL per hour:

Time Remaining = Remaining Volume / Infusion Rate

Plugging in the values:

Time Remaining = 525 mL / 150 mL/hr

After simplifying the equation:

Time Remaining = 3.5 hours

Therefore, the bag will last for approximately 3.5 more hours.

5) To determine the time at which the bag will be empty, we need to calculate how long it will take to infuse the remaining volume at the new infusion rate. At 0900, there are 2.5 hours remaining until the bag is empty. To find the time at which the bag will be empty, we can add this remaining time to the current time:

Time at which bag will be empty = 0900 + 2.5 hours

Adding the values:

Time at which bag will be empty = 11:30

Therefore, the bag will be empty at 11:30.