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休克是人体对有效循环血量减少的反应。是组织血液灌流不足引起的代谢障碍和细胞受损的病理过程。可在多种情况下发生。有效循环血量依赖三个因素:充足的血容量;有数的心排出量;完整的周围血管张力。三因素中任何因素的改变超过代偿限度时,均导至有效循环血量下降,使组织器官灌流不足而发生休克。休克发展中,三因素常都累及,相互影响。
Shock is the body’s response to the reduction of effective circulating blood volume. Is the organization caused by insufficient blood perfusion metabolic disorders and cell damage in the pathological process. It can happen in many situations. Effective circulating blood volume depends on three factors: adequate blood volume; a few cardiac output; complete peripheral vascular tone. Changes in any of the three factors over the limit of compensation, led to a decrease in effective circulating blood volume, so that organ tissue perfusion is insufficient to shock. Shock development, the three factors are often involved and affect each other.