三、 Etiology and classification of shock ( Etiology 1. Blood loss and body fluid loss SIHR/SBP SI Blood loss 0.5 10% compensation 1.0 20%30%shock 1.5 50% death三、Etiology and classification of shock ㈠ Etiology 1. Blood loss and body fluid loss SI=HR/SBP SI Blood Loss 0.5 10% compensation 1.0 20% ~ 30% shock 1.5 50% death