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Why does haemotocrit decrease in acute blood loss?

  1. Feb 16, 2011 #1
    In acute blood loss both RBC and fluid is lost, so why doesn't haemotocrit stay normal. I know compensatory mechanism would increase the fluid, eg kidney. But red blood cell prodcution would take few weeks. Is that the reason haemotocrit decreases? Thanks :smile:
     
  2. jcsd
  3. Feb 16, 2011 #2
    Indeed. Plasma would be restored way before RBC count.
     
  4. Feb 18, 2011 #3
    The decrease in mechanical pressure results in a reballance of intersititial fluid (eg think the opposite of edema).
     
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