The nurse infuses a dose of medication in 45 minutes. If the nurse determines the medication should be infused at a rate that is 20% slower, the nurse should infuse the medication over what period of time?

To determine the new infusion time when the rate is 20% slower, follow these steps:

Find the original infusion time:

The original time is 45 minutes.

Calculate the 20% slower rate:

A 20% slower rate means the time will be increased by 20%.

20% of 45 minutes is: 0.20×45=9minutes

Add the extra time to the original time:

The new infusion time is: 45minutes + 9minutes =54minutes

Therefore, the nurse should infuse the medication over: 54 minutes

To determine if the nurse has enough medication, we need to calculate the total amount of medication used and compare it to the one-ounce vial.

1. Morning Dose: ​ ounce
2. Afternoon Dose: ounce

First, find a common denominator to add these fractions. The least common multiple of 8 and 7 is 56.

Convert each fraction to have a denominator of 56:

• For ​:

= = ​

• For ​:

= = ​

​Add these fractions:

​ + =

So, the total amount of medication used is ​ ounce.

The vial contains 1 ounce. The amount of medication remaining in the vial is:

1− = − = ​

Since ounce is needed more to make up for the used amount, the nurse needs: ​ of an ounce more.

Therefore, the correct answer is:

No, the nurse needs ​ of an ounce more.