IV dilution help !!! Help pls

  1. How much of the diluted solutions will you need to draw up for the following ordered doses?
    Mrs Ling is ordered 2.5mg IV Morphine. You dilute 10mg/ml to a total of 10ml



    Mr George is ordered 500mg of Flucloxacillin. You reconstitute 1g to a total of 10ml in normal saline



    Ms Flash is ordered 2mg of metoprolol. You dilute Metoprolol 5mg/5ml to a total of 20ml.


    John Johns has a frusemide infusion running continuously. You make up the infusion to 500mg in a 50ml syringe.

    How many mg/ml will your solution provide?


    The doctor requests you run the infusion at 2mg/hr. How many ml/hr will you set the pump?


    Two hours later, John is not passing urine. The doctor requests you run the Lasix infusion at 5mg/hr. How many ml/hr will you set the pump?


    While you are at dinner, Joan sets the pump to deliver 3 ml/hr. How many mg/hr is John now receiving
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  2. 15 Comments

  3. by   Wuzzie
    Please show us your attempts to solve these answers so we can guide you.
  4. by   Here.I.Stand
    I just did these in my head...which part is tripping you up? Show us how you set up the problems, and then we can see where you went wrong
  5. by   FutureNurseInfo
    Just a tip: from the problems you provided, the amount of solute stays unchanged, only the volume of the solution increases.
  6. by   mia989
    Play , old tell me I'm on the right track!



    Mr George is ordered 500mg of Flucloxacillin. You reconstitute 1g to a total of 10ml in normal

    Sr/ss * volume?!! 500/1000* 10. 5ml?


    .
    Ms Flash is ordered 2mg of metoprolol. You dilute Metoprolol 5mg/5ml to a total of 20ml 2/5 *20

    8ml?

    John Johns has a frusemide infusion running continuously. You make up the infusion to 500mg in a 50ml syringe

    500/50

    1.1mg/ml?



    The doctor requests you run the infusion at 2mg/hr. How many ml/hr will you set the pump. 50/2* 1.2 gosh I'm so confused.

    27.5ml/hr?



    Two hours later, John is not passing urine. The doctor requests you run the Lasix infusion at 5mg/hr. How many ml/hr will you set the pump? 500/50*5??? 50ml/hr

    While you are at dinner, Joan sets the pump to deliver 3 ml/hr. How many mg/hr is John now receiving 500l50*3?? 30ml/hr??
  7. by   FutureNurseInfo
    Quote from mia989
    Play , old tell me I'm on the right track!



    Mr George is ordered 500mg of Flucloxacillin. You reconstitute 1g to a total of 10ml in normal

    Sr/ss * volume?!! 500/1000* 10. 5ml?


    .
    Ms Flash is ordered 2mg of metoprolol. You dilute Metoprolol 5mg/5ml to a total of 20ml 2/5 *20

    8ml?

    John Johns has a frusemide infusion running continuously. You make up the infusion to 500mg in a 50ml syringe

    500/50

    1.1mg/ml?



    The doctor requests you run the infusion at 2mg/hr. How many ml/hr will you set the pump. 50/2* 1.2 gosh I'm so confused.

    27.5ml/hr?



    Two hours later, John is not passing urine. The doctor requests you run the Lasix infusion at 5mg/hr. How many ml/hr will you set the pump? 500/50*5??? 50ml/hr

    While you are at dinner, Joan sets the pump to deliver 3 ml/hr. How many mg/hr is John now receiving 500l50*3?? 30ml/hr??
    500mg/50 mL = 10 mg/1 mL

    I'd double-check the rest of the problems.
  8. by   Wuzzie
    Quote from mia989

    Ms Flash is ordered 2mg of metoprolol. You dilute Metoprolol 5mg/5ml to a total of 20ml 2/5 *20

    8ml?
    Okay well...you are a bit of a mess but that's okay. You'll get this, I promise. Let's start here.

    -you have 5mg of medication diluted in 20mls of fluid.
    -how many mg of med in each ml? Hint: this is simple division.

    Once you figure this out let us know and we'll go to part two.
    And just so you don't get discouraged this step is the foundation for the rest of the problems.
  9. by   mia989
    I'm here seeking help. Guide me if I make any mistakes.

    Mrs Ling is ordered 2.5mg IV Morphine. You dilute 10mg/ml to a total of 10ml

    2.5/ 10 * 10 2.5 mg/ml. Is that correct?
    Mr George is ordered 500mg of Flucloxacillin. You reconstitute 1g to a total of 10ml in normal saline

    500/1000 * 10 5mg/ml


    Ms Flash is ordered 2mg of metoprolol. You dilute Metoprolol 5mg/5ml to a total of 20ml
    2/5 *20 8mg/ml



    John Johns has a frusemide infusion running continuously. You make up the infusion to 500mg in a 50ml syringe. 500/50 10mg/1 ml

    How many mg/ml will your solution provide?


    The doctor requests you run the infusion at 2mg/hr. How many ml/hr will you set the pump?
    I'm not quite sure how to work this out

    I'm not quite sure how to work this out. Help would be nice. 2x50 / 10 ml/hr!??! Plz hep
    Two hours later, John is not passing urine. The doctor requests you run the Lasix infusion at 5mg/hr. How many ml/hr will you set the pump?

    5x50/ 10 25ml/hr. ??!????
    While you are at dinner, Joan sets the pump to deliver 3 ml/hr. How many mg/hr is John now 3x 50 / 10 15 ml/hr??!
  10. by   FutureNurseInfo
    [QUOTE=mia989;9422793]I'm here seeking help. Guide me if I make any mistakes.

    Mrs Ling is ordered 2.5mg IV Morphine. You dilute 10mg/ml to a total of 10ml

    You dilute 10 mg/mL to 10 mL, which means you have 10 mg of medication in 10 mL of solution. Therefore, you have 10 mg/10 mL = 1 mg/1 mL. The ordered dose is 2.5 mg, which means you will need to draw 2.5 mL of the solution.
  11. by   Wuzzie
    I AM trying to guide you but I won't do your work for you and neither should anyone else. Otherwise you won't learn anything. Look at my last post and see if you can figure out the answer.
  12. by   Wuzzie
    Quote from mia989
    John Johns has a frusemide infusion running continuously. You make up the infusion to 500mg in a 50ml syringe. 500/50 10mg/1 ml

    How many mg/ml will your solution provide?


    The doctor requests you run the infusion at 2mg/hr. How many ml/hr will you set the pump?
    I'm not quite sure how to work this out !
    You already know that your concentration is 10mg/ml. You only want 2 mg so you know the amount is going to be less than 1ml. Have you learned how to set up the equation for this?
  13. by   mia989
    Quote from Wuzzie
    You already know that your concentration is 10mg/ml. You only want 2 mg so you know the amount is going to be less than 1ml. Have you learned how to set up the equation for this?
    The formula for rate is volume/ time. So 10mg/ml / 2mg/hr 0.2 is that correct?
  14. by   Wuzzie
    Good job! You got the answer correct!!! And now you know how to solve the rest of the problem.

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IV dilution help !!! Help pls