need hlep with D.A. on flow rates

  1. I must not be understanding something.
    This is my problem

    a volume of 800 ml is to infuse in 8 hours with an electronic fusion pump.

    how do you do a problem like this?
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    About tnstudentnurse

    Joined: Oct '03; Posts: 45; Likes: 4

    10 Comments

  3. by   Marie_LPN, RN
    Convert the time in hours into the time in minutes.
  4. by   tnstudentnurse
    so it would be
    gtt

    ---
    min


    How many drips per minute is an infusion pump?
  5. by   Marie_LPN, RN
    No it should be 800ml to infuse overa time of 480 minutes.


    The drops per minute on a pump depends on the what the amount of fluid and for how long.
  6. by   tnstudentnurse
    they had us to divide

    800 ml. / 8 hr. to get 100 ml/hr for the flow rate
  7. by   tnstudentnurse
    the problem states this
    calculate the following flow rates
    a volume of 800 ml is to infuse in 8 hours with an electronic fusion pump.

    how do you set the problem up?
  8. by   RNPATL
    Total Volume X gtt factor
    time of infusion

    This is the forumla that you can use. The only problem is that I do not see a gtt factor in your problem.
  9. by   Marie_LPN, RN
    Quote from tnstudentnurse
    they had us to divide

    800 ml. / 8 hr. to get 100 ml/hr for the flow rate
    That's the only way you can do it if no gtt factor is stated in the problem.
  10. by   tnstudentnurse
    no gtt factor is stated in the problem.
  11. by   lil' girl
    Not arguing with any of you but we learned like this:

    800 ml divided by 8 = 100

    and pumps deliver 60 drops per min.

    so it would be drops over time x ml 60gtt/480min. x 100 ml = 800ml


    60 goes into 60 one time, and 60 goes into 480 eight times and multiply 100 by 8 to
    get 800ml

    I think this is what you were looking for???
  12. by   LPN01112005
    flow rate = ml/hr

    800ml/8hr = 100ml/hr = flow rate for electronic pump

    If you are hanging by gravity and you need to convert to gtt/min, then you'll need the gtt factor of your tubing. Just say that it is 60 gtt/ml, then you'd do this if you are using diminsional analysis:

    gtt/min= 60gtt/1ml x 100ml/1hr x 1hr/60min =6000/60 = 100gtt/min so your drip rate should be 100 drops per minute.

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