High School

The doctor orders a sliding scale of potassium chloride (KCL) administration:

- If the potassium (K) level is above 4 mEq, do not administer KCL.
- If the K level is 3.8 to 4 mEq, administer 10 mEq of KCL added to 100 mL of NS infused over 1 hour.
- If the K level is 3.6 to 3.8 mEq, administer 20 mEq of KCL added to 200 mL of NS infused over 2 hours.
- If the K level is below 3.6, administer 40 mEq of KCL added to 500 mL of NS infused over 4 hours.

If the K level is 3.2 mEq, calculate the flow rate in mL/hr.

a. 110 mL/hr
b. 120 mL/hr
c. 25 mL/hr
d. 125 mL/hr
e. 100 mL/hr

Answer :

The correct answer to this question is: 125 mL/hr. How to solve the problem The potassium chloride to be administered is 40 mEq added to 500 mL of NS infused over 4 hours.

The K level is 3.2 mEq.

So, first we need to determine the flow rate in mL/hr.

Using the formula:

Flow Rate = Total Volume ÷ Total Time

We get:

Flow Rate = 500 ÷ 4 = 125 mL/hr

Therefore,

the answer is 125 mL/hr.

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