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Discussion

IV piggyback question

Hi i need help with this question

The doctor orders 40 meq of K+ IVPB over 4 hours. The pharmacy sends up 4 100ml bags of K+, each with 10 meq of K+ in each bag. The patient has a maintenance IV fluid of D5.45NS at a 12 hour rate. At what rate is the maintenance fluid set?

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    If you tell us your work and solution we will help you. Otherwise, we don't do homework.

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    okay i figured out for d5.45 ns means its 5% dextrose in .45% saline im not sure if we combine the maintance fluid with the doctors orders?

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    What are maintenance fluids? How much fluid does this patient need to be running at "maintenance"?

    Now, I'm a pediatric nurse so I don't calculate maintenance fluids without a weight but I believe in adults, there's a fairly standard rate that's considered "maintenance".

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    You either need a prescribed rate for your MIVF, or a prescribed volume. Is this a homework question...you are missing some info.

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    Are you sure they are asking for the maintenance rate? Did they give you a weight or protocol? I imagine they were using that as a diversion of information, because isn't the import part that the IVPB has to run for 4 hours?

    Who invented this question? But if its a 1000ml bag of D51/2NS then it could be set at 1000/12 = 83ml/hr and the IVPB is set at 100ml/hr

    Just a guess.

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    The question is asking what the rate on the maintenance fluid is not the KLC. There is some information missing and that is mainly the volume of the maintenance fluid. I am assuming it is 1000 ml and in that case it would be 83 ml per hour. the KCL would be at 100 cc per hour and it is much safer to send out the KCL in 10 meq per bag aliquots. But again there is info missing on the question.

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    • Experts
    Hi i need help with this question

    The doctor orders 40 meq of K+ IVPB over 4 hours. The pharmacy sends up 4 100ml bags of K+, each with 10 meq of K+ in each bag. The patient has a maintenance IV fluid of D5.45NS at a 12 hour rate. At what rate is the maintenance fluid set?

    Welcome to AN! The largest online nursing community!

    We are happy to help with homework but we will not do it for you. Look at the question it is not asking you for the IVPB rate. Get rid of the information that the question is not asking you.

    The doctor orders 40 meq of K+ IVPB over 4 hours. The pharmacy sends up 4 100ml bags of K+, each with 10 meq of K+ in each bag.

    Because The question is asking you.......

    What rate is the maintenance fluid set?
    or How many cc's per hour will you run the maintenance fluid?

    It does not matter what the fluid is......D5W, D5.45NS, D5.9NS.....what matters is that the IV infuses over 12 hours. Technically without knowing how big the IV bag is it is not possible to answer this problem. A total of 500cc of fluid to infuse over 12 hours is different that 1000 cc's of IV fluid to infuse over 12 hours. Now IF it is "understood" in the question (or you haven't provided) is the "standard" IVF is 1000 cc's .

    Now, You have 1000cc of IV fluid that needs to infuse over 12 hours.

    Volume/Time - IV mL Rate : Given a certain amount of liquid and a time period, what is the necessary IV flow rate in mL/hr? Measurement used when IV regulated electronically by infusion pump.

    Formula:

    [TABLE=class: formula]

    [TR]

    [TD]

    [TABLE=class: fraction]

    [TR]

    [TD=class: numerator]Volume (mL)

    [/TD]

    [/TR]

    [TR]

    [TD=class: denominator]Time (hr)

    [/TD]

    [/TR]

    [/TABLE]

    [/TD]

    [TD] = Y (Flow Rate in mL/hr)

    [/TD]

    [/TR]

    [/TABLE]

    Example: Infuse 250 mL over the next 120 minutes by infusion pump. [TABLE=class: example]

    [TR]

    [TD]

    [TABLE=class: fraction]

    [TR]

    [TD=class: numerator]Volume (mL)

    [/TD]

    [/TR]

    [TR]

    [TD=class: denominator]Time (hr)

    [/TD]

    [/TR]

    [/TABLE]

    [/TD]

    [TD] = Y (Flow Rate in mL/hr)

    [/TD]

    [/TR]

    [/TABLE]

    Convert 120 minutes to hours.

    • min → hr ( ÷ by 60 )
    • 120 min ÷ 60 = 2 hr

    [TABLE=class: example]

    [TR]

    [TD]

    [TABLE=class: fraction]

    [TR]

    [TD=class: numerator]250 mL

    [/TD]

    [/TR]

    [TR]

    [TD=class: denominator]2 hr

    [/TD]

    [/TR]

    [/TABLE]

    [/TD]

    [TD] = 125 mL/hr

    [/TD]

    [/TR]

    [/TABLE]

    Example: Ordered 1000 mL D5W IV to infuse in 10 hours by infusion pump. [TABLE=class: example]

    [TR]

    [TD]

    [TABLE=class: fraction]

    [TR]

    [TD=class: numerator]Volume (mL)

    [/TD]

    [/TR]

    [TR]

    [TD=class: denominator]Time (hr)

    [/TD]

    [/TR]

    [/TABLE]

    [/TD]

    [TD] = Y (Flow Rate in mL/hr)

    [/TD]

    [/TR]

    [/TABLE]

    [TABLE=class: example]

    [TR]

    [TD]

    [TABLE=class: fraction]

    [TR]

    [TD=class: numerator]1000 mL

    [/TD]

    [/TR]

    [TR]

    [TD=class: denominator]10 hr

    [/TD]

    [/TR]

    [/TABLE]

    [/TD]

    [TD] = 100 mL/hr

    [/TD]

    [/TR]

    [/TABLE]

    Volume/Time - IV mL Rate Questions

    go here for all you need for learning about dosages.....it's an excellent site..This website provides a dosage calculations tutorial, complete with explanations and examples, to help nursing students prepare for a medication exam...

    http://www.dosagehelp.com/

    I hope this helps! Good luck in school

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