Initiation of shockSevere blood volumeExcessive expansion of vascular bedSevere cardiac pump failureSevere cellular injury and dysfunction休克早期休克早期Changes of microcirculationPerfusion,flow Perfusion flowischemic anoxia(2)EffectsCompensatory significanceDecompensatory significance.venous reserved blood join the circulation Autotransfusion.facilitate interstitial fluid circulation（auto blood transfusion,auto blood transfusion,自我输血）自我输血）Compensative significance(代偿意义代偿意义)(auto fluid transfusion,(aut
