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Discussion

dimensional analysis problem HELP!

can someone pls give me the dimensional analysis for the following problem? I've been using it all along, but now I'm not doing something right...

Order: Heparin 40,000 units IV in 1 L 0.9% NS at 1,000 units/hr.

Calculate the rate in mL/hr ________________

please if anyone can help, I would appreciate it..

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    • Featured Replies

    If the question is right, (it seems not ordred/available very well) here is what I get.

    ml/hr= 1000ml/40,000u x 1000u/1hr = 1,000,000/40,000 = 25 ml/hr

    hope that helps.

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    • Experts

    order: heparin 40,000 units iv in 1 l 0.9% ns at 1,000 units/hr.

    calculate the rate in ml/hr ________________

    you want to end up with ml/hour:

    1000 units/hour
    (dose desired)
    x 1 liter/40,000 units
    (dose on hand)
    x 1000 ml/1l
    (conversion factor)
    =
    25 ml/hour
    (amount to give)

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    • Author

    thanks, you guys are awesome!

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