Monday, April 25, 2011

Understanding Hypovolemic Shock

In hypovolemic shock, there is a reduced intravascular blood volume which causes circulatory dysfunction and inadequate tissue perfusion. This requires early recognition and prompt treatment to improve prognosis.

How does this happen?

  • Internal or external fluid loss 
  • Decreased intravascular fluid volume 
  • Diminished venous return 
  • Reduced preload (filling pressure) 
  • Decreased stroke volume 
  • Lowered cardiac output 
  • Reduced mean arterial blood pressure 
  • Decreased tissue perfusion 
  • Reduced oxygen and nutrient delivery to cells 
  • Multiple-organ-dysfunction syndrome.

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