Chater 12Shock分析课件.ppt

Chapter 12. Shock Introduction A violent collision or a heavy blow； The effect of such a collision or blow Introduction Introduction Classic clinical presentation of shock: Section 1. Etiology and Classification of Shock Section 1. 1. Etiology and Classification of shock (1)?? According to causes 1)? Loss of blood or fluid Blood loss ? Hemorrhagic shock Fluid loss ? Dehydration shock 2)? Burn ? Burn shock 3) Trauma ? Traumic shock 4)? Infection ? Infectious (endotoxic, septic) shock 5)? Anaphylaxis ? Anaphylactic shock 6)??Acute heart failure ? Cardiogenic shock 7)? Strong stimulation on nerve system ? Neurogenic shock? Section 1. (2)?? According to the initial changes of shock development Section 1. 3 types of shock according to different initial changes  Sufficient blood Decreased Hypovolemic volume shock Adequate capacity Increased Vasogenic of vascular bed shock Normal function Disturbed Cardiogenic of heart pump shock Section 2. Stages and Pathogenesis of Shock Section 2. Presented by Lillehei in 1964. Shock is a syndrome mainly of microcirculation impairment. The sympathetic-adrenal system is consecutive excited all time during shock development, leading to decreased tissue perfusion by vasoconstriction. Section 2. The common pathogenic link is The pathogenic key point is The mechanism is Section 2. Effect of neuro-humoral factors