血容量减少血容量过低低血容(英语:Hypovolemia),指的是体内血量减少的状况[1][2] 。它表现在体内血液体积收缩和脱盐上[3]。严重可导致休克,即低血容性休克

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原因

常见的血容量减少的原因有:[4]

  • 血液减少(例如内外出血献血[5]
  • 血浆减少(例如严重烧伤)
  • 缺钠或血管内水分减少(例如腹泻、呕吐)
  • 血管舒张(例如遭到致使神经紊乱的创伤、血管舒缩中枢英语Vasomotor center抑制)

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