Blood loss

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  • Created by: Fionaa512
  • Created on: 17-06-17 19:19
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  • BLOOD LOSS
    • blood transfusion occurred during the c17 with sheep blood but the person usually died
    • bleeding made it difficult for surgeons to see what they were doing then the patient would die
    • CONTROLLING BLOOD LOSS
      • CAUTERY
        • placing red hot iron onto the wound or pouring boiling water o er the seal wound
      • c16 pare used silk thread to tie blood vessels instead of heat
        • ligatures in silk thread didn't always stop bleeding espiecally if there weren't tied probperly
          • before germ theory so surgeon operated with dirty hands
      • REPLACING BLODD
        • 1901 KARL LANSTEINER discovered bloo groups A, B, O ,AB
        • donor had to be present so LANSTEINER's discovery didn't have immediate effect
        • a pateniet who has lost a lot of blood had to have  blood from someone else of the same group
    • WWI
      • millions soldiers died from non fatal inuries. so people looked for ways to replace blood
      • 1915 it was found that adding SODIUM CITRATE preserved blood it didn't last long but it saved thousands of lives
      • blood could be sotred in refrigerated conditions
      • 1916 found that adding  CITRATE GLUCOSE  to the blood  prevented clotting.public where asked to donate blood
      • 1917 first blood bank in the battle of Cambrais using type O
      • all these methods where developed so that patients could survive long enough to reach hospitals
    • people didn't connot bleed ing to danger so deaths of shock werent recorded
    • AMBROISE PARE
      • metal clips put on arteries
      • tried silk thread but kept bleeding if not done properly
    • BLOOD
      • different classification systems caused confusion of groups
      • bottles that they were carried in weren't always aseptic
      • Group 0 universal so heavily sought for
      • involved big cut in vein donors became hard to find
      • doctors and surgeons were reluctant to change to methodsdeveloped in haste
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