Running blood through a #22 or #24??? - page 5

I am in orientation as a traveler at an urban hospital and they have just told me they run blood through #22's and #24's. Ok, I know I'm getting old, but when did that start? I was always taught that... Read More

  1. by   Wendy Psych RN
    I graduated last year and nothing was ever said about running blood thru that small of a catheter. The blood cells would lyse if squeezed thru that small of a lumen.
  2. by   canoehead
    Blood cells are invisible to the naked eye...the width of any catheter lumen is not...therefore the blood cells could go down the catheter in a Rockette line and still get through without damage. You just gotta keep the rate under about 250cc/h, and I think we can all manage to do that.
  3. by   sandyth
    We always use an 18 or 20 , nothing smaller.
  4. by   caroladybelle
    Originally posted by Wendy Psych RN
    I graduated last year and nothing was ever said about running blood thru that small of a catheter. The blood cells would lyse if squeezed thru that small of a lumen.
    Studies have been done regarding that matter and have found that there is little to no lysing unless the blood is being giving very fast/under excessive force.
  5. by   casper1
    I work in oncology, hemotology, I have successfully transfused may patients with 22s. A 20 guage is ideal but often the patients veins are in such poor condition a 20 isn't possible. A 22 gets the job done. It requires close monitoring, but blood can be infused
    in 4 hours or less.
  6. by   purplemania
    Check with Am. Red Cross, but I believe they have stated it is ok to use 22 g., which I have done on elderly or any hard stick. ER and OR probably need faster infusion, however. Also depends on volume---4 pints would probably be stretching it. Have done 24 g with Bard pump (med infusion pump) for infants. Lysing is not as much a problem with fluids continually being infused.
  7. by   Teshiee
    In NICU that is not uncommon. Just run it at a slow rate but it will flow.
  8. by   canoehead
    OMG I can't believe this debate is still going on!

    Blood cells will not lyse through a 24, or even smaller. They get through the snout of a mosquitoe, which is smaller than a hair. The problem comes when you go at a fast rate and the pressure required to get that amount of blood through a small opening will damage the cells. However if you just run it slowly there is no problem. Soemthing to do with Boyle's law, that connects pressure, diameter, and rate.

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